- First description of the nest and vocalisations of the Peruvian Antpitta Grallaricula peruviana with a northward range extension
Harold F. Greeney, Erin C. Hannelly and Mitch Lysinger
Cotinga 21 (2004): 14-17
- Notas sobre la historia natural, distribución y conservación de algunas especies de aves amenazadas del suroccidente de Ecuador
Juan F. Freile, Melissa Moreano V. , Elisa Bonaccorso, Tatiana Santander y Jaime A. Chaves
Cotinga 21 (2004): 18-24
- More distributional data on Ecuadorian birds
Ottavio Janni
Cotinga 21 (2004): 25-27
- Notes on the breeding biology of Ladder-tailed Nightjar Hydropsalis climacocerca in Bolivia
Aidan Maccormick and Ross MacLeod
Cotinga 21 (2004): 28-30
- Additional notes on eight bird species from Belize
Omar A. Figueroa, Wilver Martinez, Mario Teul, Gene Albanese and Victoria D. Piaskowski
Cotinga 21 (2004): 31-34
- Description of the nest, egg and nestling of Watkins’s Antpitta Grallaria watkinsi
Paul R. Martin and Robert C. Dobbs
Cotinga 21 (2004): 35-37
- Further observations of birds from Colima and adjacent Jalisco, Mexico
Steve N. G. Howell
Cotinga 21 (2004): 38-44
- Catálogo de especimenes recientes de aves de las sierras Juárez y San Pedro Mártir, e inmediaciones, noroeste de Baja California, México
Gorgonio Ruiz-Campos, Armando J. Contreras-Balderas, Marcelo Rodríguez-Meraz y Martha E. Valles-Ríos
Cotinga 21 (2004): 45-59
- First record of Black-throated Blue Warbler Dendroica caerulescens for Ecuador
Paul R. Martin, Robert C. Dobbs, Harold F. Greeney, Mark Doveston and Howard Creber
Cotinga 21 (2004): 60-62
- New information on plumage, nesting, behaviour and vocalisations of the Bolivian Swallow-tailed Cotinga Phibalura flavirostris boliviana from the Apolo area of Madidi National Park, Bolivia
Geoff Bromfield, William N. Ritchie, Val Bromfield, Jolyon Ritchie and A. Bennett Hennessey
Cotinga 21 (2004): 63-67
- Notes on nesting in the Bronzy Jacamar Galbula leucogastra in Peru
Bryan P. Piazza
Cotinga 21 (2004): 68
- First record of wintering Swainson’s Warbler Limnothlypis swainsonii in Chiapas, Mexico
Jorge E. Montejo Díaz and Amy E. McAndrews
Cotinga 21 (2004): 69
- First sight record of Alpine Swift Tachymarptis melba for South America, in French Guiana
Otte Ottema
Cotinga 21 (2004): 70
- Feeding observations on Scarlet Macaw Ara macao in Costa Rica
Nicole M. Nemeth and Christopher Vaughan
Cotinga 21 (2004): 71
- Primer registro de Arenaria interpres para Bolivia
Mauricio Herrera
Cotinga 21 (2004): 72
- Yellow Warbler Dendroica petechia cruciana successfully nesting in a man-made, disturbed location
Rafael Rodríguez-Mojica
Cotinga 21 (2004): 73
- New records concerning range and altitudinal distribution of Tropical MockingbirdMimus gilvus in Ecuador
Diego F. Cisneros-Heredia and Pierre-Yves Henry
Cotinga 21 (2004): 74