Variations on the nest architecture in the Rufous-fronted Thornbird complex, Phacellodomus rufifrons (Aves: Furnariidae) Fabio SchunckVítor Q. Piacentini Short Communication 27 August 2021 Pages: 169 - 172
Breeding ecology of Common Tailorbird, Orthotomus sutorius in a human-dominated habitat of Bangladesh, with notes on parasitism by Plaintive Cuckoo, Cacomentis merulinus Ashis Kumar DattaSajeda Begum Original Article 20 October 2021 Pages: 173 - 178
Breeding biology and diet of the Chaco Eagle (Buteogallus coronatus) in southeast Brazil Giancarlo ZorzinEduardo Pio M. de Carvalho-FilhoGustavo Diniz M. de Carvalho Original Article 11 November 2021 Pages: 179 - 187
Nuptial gifts among Brazilian cuckoos: an outline based on citizen science Dárius Pukenis TubelisIvan Sazima Original Article 19 November 2021 Pages: 188 - 192
Sexual maturity, molting, and reproductive activity in the Carib Grackle (Quiscalus lugubris) Luisa F. SaavedraYadi X. FigueroaMartha P. Ramírez-Pinilla Original Article 22 December 2021 Pages: 193 - 206
Visual cues do not increase artificial nest predation in a Brazilian tropical savanna Paulo Victor Resende dos SantosIngrid Pinheiro PaschoalettoSamara de Albuquerque Teixeira Original Article 04 November 2021 Pages: 207 - 212
Distribution and migration phenology of Purple Martins (Progne subis) in Brazil Clarissa O. SantosJonathan M. BrancoErika Hingst-Zaher Original Article 17 November 2021 Pages: 213 - 222
Nest predation by Channel-billed Toucans (Ramphastos vitellinus) on Pale-breasted Thrushes (Turdus leucomelas) in a central Amazonian urban forest fragment Edson Rodrigues CostaLeandro Siqueira FernandesMarcelo Gordo Short Communication 23 November 2021 Pages: 223 - 226
Territory size, population density, and natural history of Cabanis’s Ground Sparrow, an endemic species found in urban areas Roselvy JuárezMaría de la Paz Angulo IrolaLuis Sandoval Original Article 27 December 2021 Pages: 227 - 239
First record of the White-winged Scoter, Melanitta deglandi (Bonaparte, 1850) (Anseriformes: Anatidae) for the Azores and Portugal Luís M. D. BarcelosRúben CoelhoJoão P. Barreiros Short Communication 29 November 2021 Pages: 240 - 242
