The Editors would like to thank the following people for their invaluable help and advice in the review of manuscripts between 1 August 2020 and 31 July 2021. If a reviewer helped with more than one manuscript, the number is indicated in parentheses.
Abernethy, K., Stirling, UK
Adams, T., Kasane, Botswana
Adhikari, A., Kathmandu, Nepal
Alempijevic, D., Boca Raton, USA
Altrichter, M., Prescott, USA
Andreone, F., Turin, Italy
Appleton, M., Thetford, UK
Arinaitwe, J., Nairobi, Kenya
Aust, P., Johannesburg, South Africa
Azat, C., Santiago, Chile
Balint, L., Cambridge, UK
Bauer, H., Tubney, UK
Becker, H., Cambridge, UK
Belhekar, V., Mumbai, India
Bergl, R., Asheboro, USA
Beton, D., Kyrenia, Cyprus
Bingham, H., Cambridge, UK
Bista, D., Kathmandu, Nepal
Black, S., Canterbury, UK
Blades, B., Oxford, UK
Blake, J., Gainesville, USA
Bonebrake, T., Hong Kong, China
Borchers, D., St Andrews, UK
Botton, M., New York City, USA
Bowden, C., Sandy, UK
Brack, I., Porto Alegre, Brazil
Breuer, T., Berlin, Germany
Brockelman, W.Y., Nakhon Pathom, Thailand
Brockington, D., Sheffield, UK
Brodie, J., Missoula, USA
Byers, B., Falls Church, USA
Caitano, H., Vitoria, Brazil
Carignano Torres, P., São Paulo, Brazil
Carter, N., Boise, USA
Carvalho, V., Caucaia, Brazil
Casella, L., Rome, Italy
Ceballos, G., Mexico City, Mexico
Chan, A., Fort Collins, USA
Cheyne, S., Palangka Raya, Indonesia
Chiarello, A., Belo Horizonte, Brazil
Choudhary, S., Noida, India
Cisneros-Montemayor, A., Vancouver, Canada
Crema, L., Manaus, Brazil
Cresswell, W., St Andrews, UK
Davenport, T., Stone Town, Tanzania
de Jong, Y.A., Nanyuki, Kenya
Denninger Snyder, K., Fort Collins, USA
Detwiler, K., Boca Raton, USA
Diniz, M., Goiânia, Brazil
Domínguez Tejo, H., Santo Domingo, Dominican Republic
Donald, P., Cambridge, UK
dos Santos, J., Maceió, Brazil
Duckworth, W., Geneva, Switzerland (2)
Dudley, N., Bristol, UK
Dunn, M., London, UK
Ehmke, G., Carlton, Australia
Elliott, L., Gland, Switzerland
Espinosa de los Monteros, A., Xalapa, Mexico
Ferraz, K., Piracicaba, Brazil
Fisher, B., Burlington, USA
Fisher, R., San Diego, USA
Fjeldså, J., Copenhagen, Denmark
Formia, A., Libreville, Gabon
Fruth, B., Liverpool, UK
Fuller, T., Amherst, USA
Gardner, M.F., Edinburgh, UK
Garnett, S., Darwin, Australia (2)
Geary, M., Chester, UK
Ghanbari, S., Tabriz, Iran
Gilbert, G., Glasgow, UK
Gill, D., Cambridge, UK
Gluszek, S., Cambridge, UK
Goossens, B., Cardiff, UK
Green, R., Cambridge, UK
Groom, M., Bothell, USA
Harihar, A., Uttaranchal, India
Hart, J., Kinshasa, Democratic Republic of the Congo
Havmøller, R., Copenhagen, Denmark
Hays, G., Warrnambool, Australia
Hearn, A., Tubney, UK
Heymann, E.W., Göttingen, Germany
Hoare, R., Arusha, Tanzania
Hoffmann, P., Campo Largo, Brazil
Holmes, G., Leeds, UK
Home, C., Jakkur, India
Hübschle, A., Cape Town, South Africa
Hunter, L., New York City, USA
Ibbett, H., Bangor, UK
Jeanson, A., Ottawa, Canada
Jiang, X., Kunming, China
Jiang, Z., Beijing, China
Johnson, A., Vientiane, Laos
Jones, Martin, Manchester, UK
Jones, Megan, Boulder, USA
Kacoliris, F., La Plata, Argentina
Kamel, M., Qena, Egypt
Karamanlidis, A.A., Thessaloniki, Greece
Khara, A., Mysore, India
King, T., Port Lympne, UK
Koju, N.P., Bhaktapur, Nepal
Kraus, F., Ann Arbor, USA
Kretser, H., Saranac Lake, USA
Kujirakwinja, D., New York City, USA
Lamichhane, B.R., Sauraha, Nepal
Le Bel, S., Paris, France
Lemessa, D., Addis Ababa, Ethiopia
Lennon, O., Wellington, New Zealand
Letro, L., Thimphu, Bhutan
Link, A., Bogotá, Colombia
Lloyd, H., Manchester, UK
Lowry, P., Paris, France
Loy, A., Pesche, Italy
Luiselli, L., Rome, Italy
Lunt, N., Bulawayo, Zimbabwe
Mallon, D., Glossop, UK
Martin, A., Dundee, UK
Melo, F., Viçosa, Brazil
Mickleburgh, S., London, UK
Missoup, A.D., Douala, Cameroon
Mistry, J., Egham, UK
Moore, J., Houston, USA
Moraes, B., Recife, Brazil
Morcatty, T., Oxford, UK
Moreto, W., Orlando, USA (2)
Mugerwa, B., Berlin, Germany (2)
Muñoz Brenez, C., Arlington, USA
Mwangi, K., Cambridge, UK
Nayeri, D., Arcata, USA
Newing, H., Oxford, UK
Ngoprasert, D., Bangkok, Thailand
Noss, A., Gainesville, USA
Nowak, K., Phuthaditjaba, South Africa
Olson, E., Ashland, USA
Omeyer, L., Exeter, UK
Ortega-Argueta, A., Villahermosa, Mexico
Ostrowski, S., New York City, USA (2)
Otieno, M., Nairobi, Kenya
Owen, N., London, UK
Pardo, M., La Paz, Mexico (2)
Parks, D., London, UK
Patricio, A.R., Coimbra, Portugal
Pierce, S., Inhambane, Mozambique
Pietersen, D., Pretoria, South Africa
Portugal, M., Belo Horizonte, Brazil
Pretis, F., Victoria, Canada
Pritchard, R., Manchester, UK
Rahman, D., Bogor, Indonesia
Rao, M., Singapore, Singapore
Richmond, J., San Diego, USA (2)
Riordan, P., Winchester, UK (2)
Rojas-Marchini, F., Vancouver, Canada (2)
Roshier, D., Adelaide, Australia
Round, P., Bangkok, Thailand
Rylands, A., Arlington, USA
Samelius, G., Seattle, USA
Sánchez, L., Caracas, Venezuela
Sanderson, E.W., New York City, USA
Savini, T., Bangkok, Thailand (2)
Schneider, H., Cambridge, UK
Scholte, P., Abidjan, Côte d'Ivoire
Seddon, P., Dunedin, New Zealand (2)
Shaffer, B., Los Angeles, USA
Shaney, K., Mexico City, Mexico
Sharma, H., Kirtipur, Nepal
Shi, K., Beijing, China
Shwe, N.M., Yangon, Myanmar
Slaght, J., Vladivostok, Russian Federation
Smith, P., Richmond, UK (2)
Sonter, L., Burlington, USA
Souter, N., Arlington, USA
Spira, C., Bukavu, Democratic Republic of the Congo
Steinmetz, R., Bangkok, Thailand
Stokes, E., New York City, USA
Storch, I., Freiburg, Germany
Struebig, M., Canterbury, UK
Sung, Y.-H., Hong Kong, China
Tallis, H., Berkeley, USA
Thevenin, C., Paris, France
Tiongson, A.J., Dumaguete City, Philippines
Tobe, S., Murdoch, Australia
Turvey, S., London, UK
Valvede, A., San Jose, Costa Rica
Vermeer, J., Moyobamba, Peru
Wei, F., Beijing, China
Weller, S., Irvine, USA (2)
Whitmore, N., Goroka, Papua New Guinea
Wilkie, D.S., Waltham, USA
Wilson, S., Chester, UK
Woinarski, J., Darwin, Australia
Wurz, A., Goettingen, Germany
Xu, Q., La Jolla, USA
Yang, B., Chengdu, China
Zapata-Rios, G., Quito, Ecuador
Zhang, M., Menglun, China
Zöckler, C., Cambridge, UK