We monitored the illegal pet trade in Los Pozos pet market from August 2004 to July 2005. As indicated in Bolivian law, all unauthorized trade in wild animal species is illegal, especially species considered threatened by IUCN. During this period, we recorded 7,279 individuals of 31 parrot species, including four threatened species, two of which were being transported from Brazil through Bolivia to markets in Peru. The most frequently sold species was the Blue-fronted Parrot Amazona aestiva with 1,468 individuals observed during our study, the majority of which (94%) were believed to have been captured in the wild. Most of the purchased birds remain within Bolivia, while the more expensive, threatened species frequently head to Peru; some individuals may even reach Europe. We believe our study describes only a small proportion of the Bolivian parrot trade, underscoring the potential extent of the illegal pet trade and the need for better Bolivian law enforcement.

Resumo

Monitoreamos el comercio ilegal de aves en el mercado de mascotas de Los Pozos, desde agosto de 2004 a julio de 2005. De acuerdo a lo que establece la ley boliviana, todo comercio no autorizado de animales salvajes es ilegal, especialmente de especies consideradas Amenazadas por la IUCN. Durante este periodo, grabamos 7.279 individuos de 31 especies de loros, incluyendo 4 especies amenazadas, de las cuales dos fueron transportadas desde Brasil a través de Bolivia hacia mercados en Perú. La especie más frecuentemente vendida fue el Loro Frente Azul Amazona aestiva, con 1.468 individuos observados durante nuestro estudio, de los cuales creemos que un 94% ha sido capturado en su hábitat natural. La mayoría de la compra de aves permanece dentro de Bolivia, mientras que las más caras especies amenazadas, se dirigen a Perú; algunos individuos pueden incluso alcanzar Europa. Creemos que nuestro estudio describe sólo un pequeão porcentaje del comercio de loro boliviano, subrayando el grado potencial del comercio ilegal de mascotas y la necesidad de una mejor aplicación de la ley boliviana.

A review by Peterson (2006) claims that a new species-level taxonomy leads to improved conservation insights for Philippine birds. However, it does not report how borderline taxonomic cases were dealt with, how many taxa and specimens were examined, how closely the evaluations were made, why four key museums were omitted from the survey, and why certain taxa were omitted despite their presence in museums visited. It provides no conclusive or accurate diagnoses in more than 40% of taxa on the first two pages of the Appendix, and overlooks another 16% that have already achieved species-level recognition. It unjustifiably asserts that work was hampered by lack of material, and inappropriately calls for the collection of a highly threatened taxon. It employs one unstable diagnostic method but preaches the virtue of another, entirely different but equally unstable. All these shortcomings undermine confidence in the paper's rigour; and reference to the recent conservation literature shows that in any case no new conservation insights have resulted.

Concern has been expressed that failure to adopt phylogenetic or related species concepts will result in biodiversity loss. Here we describe how widespread adoption of such concepts may affect conservation administration and the social contract with elected governments that fund management of threatened species. We then review threatened species legislation, showing that most laws and international conventions avoid arguments over species' definitions altogether, thus negating arguments that such definitions should be changed to further species' conservation.

We provide new information on all birds known from San Rafael National Park, Paraguay. Ornithological records from the period 1997 to 2006 have been reviewed, adding 112 new species to the reserve's avifauna. We provide data on the presence of 405 species in seven basic habitats types, and on their relative abundance. Biogeographically, San Rafael has a mixed avifauna, consisting of 70 Atlantic Forest endemic species, two Mesopotamian Grassland endemics, and many with a wider distribution in South America. At least 12 species are threatened and 16 near-threatened, including important populations of Dryocopus galeatus, Platyrinchus leucoryphus, Alectrurus tricolor and Xanthopsar flavus. We provide brief comments on records of these 28 species within the study site. The avifauna of the reserve is one the most important in Paraguay, due to its high diversity and endemism. At the same time, it is under great threat and its viability is at risk unless urgent actions are taken. Fragmentation of the Atlantic Forest in Paraguay has left the San Rafael block almost totally isolated from other forests. The degradation of its forests through selective logging and clearance for agriculture still has severe impacts, as do hunting and frequent fires in grasslands and forests. Unfortunately, the legal situation of the National Park is extremely precarious, creating great uncertainty and problems for its conservation.

Aqui relatamos nuevas informaciones sobre todas las aves conocidas hasta el presente dentro del Parque Nacional San Rafael. Se han revisado registros ornitológicos comprendidos entre los aãos 1997 y 2006, que han permitido aãadir 112 especies nuevas para la reserva. De esta manera, San Rafael tiene un total de 405 especies registradas. Para cada una de ellas se facilitan datos que documentan su presencia en siete tipos de hábitats básicos diferenciados, y de su abundancia relativa. Biogeográficamente, la avifauna de San Rafael es una mezcla que está compuesta por 70 especies endémicas del Bosque Atlántico, dos endémicas de los Pastizales de la Mesopotamia, y el resto, son de distribución más amplia en Sudamérica. Al menos, 12 especies están amenazadas y 16 casi-amenazadas, incluyendo poblaciones importantes de Dryocopus galeatus, Platyrinchus leucoryphus, Alectrurus tricolor y Xanthopsar flavus. De éstas 28 especies, se proporcionan comentarios breves sobre sus registros en el área de estudio. La avifauna de la reserva resulta una de las más importantes dentro del Paraguay, tanto por su mayor diversidad y presencia de endemismos, como por ser una de las áreas con alto potencial para mantener la biodiversidad, al tiempo que se encuentra sometida a fuertes amenazas que ponen en peligro su viabilidad en caso de no tomarse medidas urgentes. La alta fragmentación del Bosque Atlántico dentro del Paraguay, ha dejado al bloque de San Rafael prácticamente aislado de otros bosques. La degradación de sus bosques por tala selectiva y desmonte para agricultura son aún grandes impactos dentro de sus límites, así como la caza furtiva y la quema frecuente inducida de pastizales y bosques. Desafortunadamente, la situación legal del Parque Nacional es extremadamente precaria, generando así gran incertidumbre y dificultad para su conservación.

The Long-tailed Ground-roller (Uratelornis chimaera) is a globally Vulnerable, restricted-range species of dry forests in south-west Madagascar. We studied a population in 1997–2000, finding that nest-building was relatively synchronous and that pairs preferentially nested next to open areas, such as driveable tracks. By searching for trackside nests and for footprints, we conducted surveys throughout the known range of the species. Total transect coverage was 153 km, along which we encountered a minimum of 28 breeding pairs. By dividing the transects into 41 randomly distributed survey strips, each 1.2 km in length and 200 m broad, we intensively sampled an area of 9.84 km2. Using transect data, we made a tentative estimate of 5.7 mature adults km−2, from which we estimated a global population of 21,092 individuals, based on our calculation from satellite imagery that 3,706 km2 of suitable habitat remained. By comparing habitat data at points with and without ground-rollers we found that, contrary to previous statements, they prefer lower stature or degraded habitats, and have no direct association with the endemic cactus-like tree Didierea madagascariensis. We used a novel census technique to provide the first quantitative data on population size, population density, breeding behaviour and ecology in the Long-tailed Ground-roller, or any member of the family Brachypteraciidae, information that is crucial to the design of effective conservation programmes.

The Eastern Imperial Eagle (Aquila heliaca), a vulnerable and declining species, is widely but sparsely distributed throughout its range. Because much of that range extends through the Russian-speaking world, relatively little on the species has been published in English. The world's easternmost population of Eastern Imperial Eagles, at Lake Baikal, Russia, is particularly well studied and, because of recent rapid population declines, is of great conservation concern. Here, using a data set covering more than 20 years evaluated in the context of historical accounts published in Russian, we assess recent severe declines in this population and the subsequent changes in its conservation status. In intensively surveyed areas near Lake Baikal, numbers of territories occupied by eagles have declined by 80–100% in the past 20–40 years. Likewise, throughout the entire region, the average number of known occupied and breeding territories were both more than 40% lower in 1998–1999 than they were in 1982–1983. These data suggest severe long-term declines in the population of Baikal's Imperial Eagles. Because we observed only limited decreases in reproductive output, our interpretation of the patterns in these data is that mortality of non-breeding birds (wintering adults and all pre-adults) is the most likely cause for this decline. Addressing the causes of this decline is critical to protect this severely threatened population from extirpation.

Восточный могильник (Aquila heliaca), уязвимый и сокращающийся в численности вид, широко, но разрозненно распространен по своему ареалу. В связи с тем, что большая часть его ареала находится в пределах русскоговорящей части мира, относительно мало опубликовано по этому виду на английском языке. Самая восточная группировка могильника находится в Прибайкалье. Она изучена особенно хорошо и из-за быстрого сокращения популяции вызывает особую тревогу и озабоченность природоохранников. Используя более чем >20 летние данные, рассмотренные в контексте исторических сведений опубликованных по-русски, мы оцениваем недавнее серьёзное сокращение этой популяции и последующие изменения в её природоохранном статусе. На территориях, находящихся под интенсивным обследованием в Прибайкалье, количество участков занятых орлами сократилось на 80–100% за последние 20–40 лет. Таким же образом, во всем регионе, среднее количество известных занятых территорий и гнездовых участков в 1998–1999 было на >40% меньше по сравнению с 1982–1983. Эти данные свидетельствуют о серьёзном долговременном сокращении прибайкальской популяции могильника. В связи с тем, что мы наблюдали лишь незначительное снижение результатов размножения, наша интерпретация модели по этим данным приводит к выводу, что смертность неразмножающихся птиц (зимующих взрослых и неполовозрелых птиц) является наиболее вероятной причиной этого сокращения. Выявление причин произошедшего падения численности очень важно для сохранения этой угрожаемой популяции от полного вымирания.

Collar (2007) attacked a recent paper of mine (Peterson 2006) on a number of grounds; he raised some valid points, and detected some errors in detail. Here, I respond to his criticisms, clarify misunderstandings, and urge the field to move beyond the status quo to consider the need for new taxonomic viewpoints to benefit bird conservation globally.

The rapid destruction of habitat in biodiversity hotspots calls for the urgent formulation of conservation strategies. In this study, macro-scale biogeographical data for 33 species of Psittacines were used to select networks of priority areas, using an algorithm based on the complementarity concept. Human population size was also incorporated as a cost in the selection process, and the two networks of priority areas (with and without cost) were compared. In the comparison the number of cells selected to represent all species did not differ, but a rearrangement occurred between them. Two of the four cells were located in the same place, and the others changed location but stayed aggregated within the same regions. The study shows that it is possible to minimize human population size and represent all species in a network of priority areas.

Many recently designated or expanded nature reserves in China were forest farms that ceased operations in the aftermath of the catastrophic Yangtze River floods of 1998. Although the vegetation in many of these areas has been altered significantly during forestry operations, there is now an opportunity to reduce, or even reverse, habitat loss for wildlife species that inhabit these forests. One such species is the globally threatened Reeves's Pheasant Syrmaticus reevesii that is endemic to the forested mountains of central and south-west China. From April 2000 to August 2003, the habitat use by 14 male Reeves's Pheasants was studied by radio-tracking at Dongzhai National Nature Reserve in the Dabie Mountains, central China. Conifer-broadleaf mixed forest was used preferentially in all seasons at the study area scale, as were mature fir plantations and shrubby vegetation. Moreover, young fir plantations were used preferentially during the breeding season at the scale of the home range. Surveys recorded the pheasant in 13 other protected areas in the Dabie Mountains, and indicated that broadly similar habitat types were available in all of them. Furthermore, Reeves's Pheasant were found in habitats similar to those used preferentially at Dongzhai National Nature Reserve. It seems likely that a mosaic of habitats is crucial to meet the various requirements of male Reeves's Pheasants throughout the year and management should therefore concentrate on maintaining this mosaic. It is now important to identify the habitats that produce the most young pheasants so that nesting and brood-rearing habitats can be clearly identified. Further studies on the habitat mosaic would be useful, both at a local scale and also at a larger, landscape scale.

Ingestion of foreign anthropogenic material, here called junk, has been documented in many avian taxa but has become especially problematic in some Old World Gyps vulture populations within the last 30 years. Here, we document the effects of ingested junk on a reintroduced population of the Critically Endangered California Condor Gymnogyps californianus in southern California, U.S.A. Of 13 breeding attempts to date (2001–2005), only one has resulted in successful fledging. Of nests where either the nest substrate was sifted (n = 10) or nestlings (n = 8) were examined, all but one held junk. Nine nestlings hatched in the wild between 2002 and 2005; of these six died at or near nests and two were removed from the wild for health reasons. Four dead nestlings and two removed from the wild held substantial quantities of junk. In two cases, junk ingestion was determined to be the cause of death. Five of six dead nestlings had elevated hepatic copper levels (150–531 ppm dry weight) although the significance of this, if any, remains undetermined. In comparison with historic condor nests (n = 69), junk was more prevalent and of greater size and quantity in reintroduced condor nests. To date, junk ingestion has been the primary cause of nest failure in the reintroduced condor population and threatens the reestablishment of a viable breeding population in southern California.

Resort development and coastal beach erosion have led to declines in beach breeding habitat for the near-threatened Malaysian Plover (Charadrius peronii) in the Gulf of Thailand. Semi-natural saltflats may provide supplementary nesting areas. We compared the environmental conditions, incubation behaviour and nesting success of plovers breeding on sandy beaches and saltflats in Thailand. In total we monitored 21 and nine nesting attempts in 2004 (beaches and saltflats, respectively) and 26 and 22 nesting attempts in 2005. Despite higher air temperatures in the saltflats (P < 0.0001), we detected no significant differences in nest attendance (P = 0.542 and P = 0.885 for 2004 and 2005, respectively), number of incubator changes between parents (P = 0.776 and P = 0.823) or number of parental nest departures (P = 0.087 and P = 0.712) during 120 incubation observations on 55 nests. There was also no difference in hatching success between beaches in 2004 (beach = 0.65, saltflat = 0.55; P = 0.692, n = 26) and 2005 (beach = 0.46, saltflat = 0.35; P = 0.539, n = 41). These results suggest that saltflats may provide nesting habitat for Malaysian Plovers and could help enhance overall hatching success rates by reducing nesting densities on beaches. Although there are few remaining intact saltflats in coastal Thailand, there are currently vast areas of abandoned tiger prawn aquaculture ponds that could be rehabilitated into saltflats at relatively low cost. Given the large area of disused aquaculture ponds throughout Thailand and South-East Asia and the substantial human pressure on coastal habitats, there could be considerable conservation benefits to the restoration of aquaculture ponds.

The Cape Vulture (Gyps coprotheres) is an obligate cliff-nesting vulture endemic to southern Africa. Its range and population size have declined markedly over the last century. Namibia has just one colony, located on the cliffs of the Waterberg Plateau, with a population estimated to be eight adult birds, including two females. The species is regarded as Critically Endangered in Namibia, and establishing a secure breeding population may require intensive management. Data on movements, foraging range and behaviour of Cape Vultures, important in any management programme, have been lacking. Five adult males and one immature were captured near the Waterberg site and fitted with satellite-tracking devices. Only two of the adult vultures still roosted on the cliffs and only one of those exclusively; the other individuals roosted in trees. Three individuals were observed building and attending to nests in trees, and, for one of these, the partner was identified as an African White-backed Vulture (Gyps africanus). The foraging range of the adult birds was large compared with other studies of this species. Most foraging took place on freehold farms. All adults avoided areas of communally owned land where wild ungulates are uncommon, thus further decreasing their potentially available food supply. Two ‘vulture restaurants’, feeding sites specifically for vultures, within the foraging range of the adult birds accounted for a large proportion of their time spent on the ground. The ranging behaviour of adult vultures varied throughout the year, and was apparently related to their nesting behaviour.

Developing a standardized survey methodology to census and estimate the size of wintering populations is a main conservation priority for the endangered Little Bustard. We present a standard and repeatable methodology to census wintering Little Bustard populations at a regional scale, and the first statistically reliable population estimate of a Little Bustard wintering population in Spain. We carried out two surveys, in 2003 and 2004, using UTM 10 km × 10 km squares as census units, which were subjected to stratified sampling over the species' potential distribution range in the region of Madrid (Central Spain). Only the areas of potentially suitable habitat within squares of known winter presence of the species were considered. The species' winter distribution in Madrid was fairly constant between years, showing a fragmented pattern in three main nuclei. The number of Little Bustards observed was consistent between surveys (752 and 786 birds, respectively), with birds grouped in an average of 32 flocks (1 to 350 birds, mean = 27.9 birds). No between-winter differences in flock size were observed, although differences between sectors were significant. The highest densities were observed in the Tagus valley (mean density = 2.9 birds km−2, 293 birds), followed by north-eastern farmland (mean density = 0.6 bird km−2, 269 birds). The estimated size of the Little Bustard population wintering in the Madrid region was 1,051 (95% CI = 1,043–1,231). This calculation was based on recorded population density, measured as the number of birds per square kilometre, and considers the potential habitats available in each sector. We propose this methodology as adequate for surveying any Little Bustard wintering area, at both regional and smaller spatial scales. Survey results are consistent with previous tentative estimates for the region of Madrid, and with available information on Little Bustard movements. Sixty-five per cent of squares with Little Bustard presence were outside any protected area, which makes the wintering Little Bustard population of Madrid highly vulnerable to habitat disappearance and may affect the viability of breeding nuclei whose individuals winter in the region.

In a manuscript written by August Spennemann in the 1930s, information is presented on display behaviour, vocalizations and habitat at two hitherto unknown localities of the Javanese Lapwing Vanellus (Hoplopterus) macropterus, a species last recorded in 1940. We provide a translation of the notes and give a summary of all information additional to what has already been published on the species. The Javanese Lapwing is historically known from two discrete areas on the island of Java: one in the west along the north coast, and one in the east along the south coast. Spennemann's observations, made in 1927 and 1928 at Poponcol and Tegallurung, represent the last documented sightings of the species along the north coast and are situated some 75 km east of the north coast's previous easternmost known locality, effectively doubling the species' known range in western Java. At this time, the Javanese Lapwing was observed daily, and unlike at most other localities from where the species is known, was common. Spennemann observed them in groups of up to six birds, the largest group size recorded. Some local movement or migration is suggested by its erratic occurrence and off-shore sightings.

Following the catastrophic decline in populations of three species of South Asian Gyps vultures, we conducted a study to explore socio-economic variables that could facilitate conservation efforts. A questionnaire survey was carried out in 103 randomly selected households in the Rampur valley, one of the Important Bird Areas of Nepal, during 2004. Among respondents, 38% were female, 62% male, 28% illiterate and 72% literate. Households belonged to three ethno-religious groups (Hindu castes, ethnic groups and Muslim) and 96% of households had some parcels of registered land to farm. About 90% of households reared one or more types of livestock while the mean Livestock Size Unit was 3.32 per household. Livestock diseases and ailments were common and usually treated with diclofenac. Livestock carcass disposal practices were favourable to vultures because 60% of households dumped carcasses in open fields. Diclofenac is lethal to vultures; 3% of diclofenac-contaminated carcasses were available annually. The majority (78%) of respondents had favourable attitudes towards the concept of vulture conservation. Diclofenac contamination and the destruction of nesting habitat were two major threats to vultures. Ensuring healthy food through economic incentives, inculcating new values through environmental education and soliciting popular participation for habitat conservation are recommended.

Many bird species of conservation importance inhabit the grasslands of the Hungarian Great Plain. Although extensive grazing management usually supports more bird species than intensive management, the conservation priority is to protect rare or declining species. Therefore, the conservation status of species must also be included in assessments of the value of different habitats. We used territory mapping to count birds in 21 extensively and intensively grazed field pairs on the Hungarian Great Plain, and subsequently adjusted site scores depending on which species appeared on various lists of priority taxa. We investigated differences in conservation scores of two global conservation lists (the Bonn Convention and another based on values of eight biological characteristics), two West Europe based lists (Bird Directive and CORINE), three continental lists (European Threat Status, SPEC and Bern Convention) and two Hungarian lists (protected species of Hungary and an alternative based on the specifics of Hungarian populations). Extensively managed fields had higher conservation values under seven of the nine priority lists: only the two West Europe based lists showed opposite trends in more than half the study areas. Since both West Europe based lists cover many central and eastern European countries, there is an urgent need to revise these lists, especially the Bird Directive list that gives serious legal responsibilities to countries.

Our study focused on the Taita White-eye Zosterops silvanus, one of three bird species endemic to the Taita Hill forests, south-east Kenya. Formerly considered Critically Endangered, Taita White-eye has been down-listed to Endangered following the findings of this study. Between November 1998 and September 1999 we counted this species along line transects to establish their current population status and distribution in its entire range. White-eye censuses were conducted in nine forest fragments of the Taita Hills and the virtually undisturbed Mt Kasigau forest. The total global population of Taita White-eyes was estimated to be c. 7,100 birds. Mt Kasigau was shown to be the species' main stronghold, maintaining a very high density (26 birds ha−1) and holding 80% (5,600 individuals) of the entire population. In the Taita Hills forests, densities were consistently higher in the small isolated fragments than in the large ones, though the former held only a small population (3% of total). At Mt Sagala, a large isolated block where indigenous trees have been largely replaced with exotic plantation, this species was not encountered. We found no evidence of interchange between the White-eye populations on Mt Kasigau and the Taita Hills forests, probably because of the separation by a low-altitude, dry woodland habitat barrier. While prioritization for conservation action should focus more on the Taita Hills forest fragments, Mt Kasigau should be treated as fragile ecosystem which holds a huge, apparently insular population of Taita White-eyes.

The Araucaria Tit-spinetail Leptasthenura setaria (Furnariidae) is a globally Near Threatened species. Its habitat, the araucaria (Araucaria angustifolia) rainforest of south-east Brazil and north-east Argentina, is highly fragmented and reduced to nearly 10% of its original range. The species has also been recorded in commercial araucaria plantations that comprise about 80% of its suitable habitat in Argentina. This situation provides an opportunity for the conservation of the Araucaria Tit-spinetail in a human-modified landscape. We assessed the occurrence of the species in the region and estimated its density and total population size in araucaria plantations in Argentina. We discuss the value of plantations in the conservation of the bird, and evaluate its conservation status in Argentina using IUCN criteria. The density of the tit-spinetail in araucaria plantations, estimated by a distance sampling method, was 9 birds ha−1. The overall population size in commercial plantations appears to be large (>7,000 birds), showing that araucaria plantations play an important role in the conservation of the bird. However, plantations must not replace the native araucaria forest because the former are an intrinsically fragmented habitat influenced primarily by economic factors and forestry practices. The long-term conservation and restoration of araucaria rainforest in Argentina and Brazil must be guaranteed to conserve the Araucaria Tit-spinetail and other species associated with this rainforest. Based on the restricted and very fragmented habitat, the Araucaria Tit-spinetail should be regarded as Vulnerable in Argentina.

Distance sampling, line transects and radio-tracking have been used previously to estimate population abundances and movements of hornbills. We used a large dataset of audio recordings made over 10 years to estimate seasonal variation in abundance of three species: Black-casqued Hornbill Ceratogymna atrata, Yellow-casqued Hornbill C. elata and Brown-cheeked Hornbill Bycanistes cylindricus, in Taï National Park, Côte d'Ivoire. The latter two species are Near Threatened. Recordings of hornbill wing-beats were used to control for potential seasonal variation in call production. Yellow- and Black-casqued Hornbill calls were 10 times as abundant from July to February as they were from March to June. Brown-cheeked Hornbills showed a similar trend, but less pronounced. From these data we concluded that large numbers of Yellow- and Black-casqued Hornbills had left the Taï National Park during this period. The significance of these findings is discussed in relation to the fragmentation and regeneration of the Upper Guinea forests and the relatively small size of the remaining forest habitat in the region.

Les taux d'abondance et de mouvement des populations de calaos étaient auparavant estimés par un échantillonnage et des analyses sur le logiciel Distance, des transects linéaires et des repérages télémétriques. Nous avons eu recours è un grand ensemble d'enregistrements audio effectués sur plus de 10 ans afin d'estimer la variation saisonniàre de l'abondance de trois espàces rencontrées dans le Parc National de Taï, en Côte d'Ivoire : le Grand Calao è Casque Noir Ceratogymna atrata, le Grand Calao è Casque Jaune Ceratogymna elata et le Calao è Joues Brunes Bycanistes cylindricus. Ces deux derniàres espàces sont aujourd'hui considérées comme presque menacées. Nous avons procédé è des enregistrements de battements d'ailes pour tester une potentielle variation saisonniàre de la production des cris. Les cris des Grands Calaos è Casque Jaune et è Casque Noir étaient dix fois plus abondants entre juillet et février qu'entre mars et juin. En revanche, les Calaos è Joues Brunes n'ont présenté qu'une petite variation du taux d'abondance entre ces deux périodes. D'apràs ces données, nous avons conclu qu'un grand nombre de Calaos è Casque Jaune et è Casque Noir quittent le Parc National de Taï entre mars et juin. La signification de ces découvertes est discutée en tenant compte de la fragmentation et de la régénération des forêts de Haute Guinée ainsi que de la dimension relativement petite de l'habitat forestier subsistant dans cette région.