Keywords
Euphonia luteicapilla
interspecific aggregations
roosting behavior
tropical birds
How to Cite
Abstract
We describe the use of a communal roost by Euphonias (Euphonia spp.) in the Wilson Botanical Garden, Costa Rica, based on direct observations conducted over four consecutive days in January 2024, at dusk and during the night. We recorded groups of five to eight individuals, along with the Rufous-collared Sparrow (Zonotrichia capensis), the Summer Tanager (Piranga rubra), and two species of the genus Elaenia. Roost use was temporary and associated with vegetation structure, suggesting that dense foliage may influence roost site selection.
References
Beauchamp G (1999) The evolution of communal roosting in birds: origin and secondary losses. Behavioral Ecology 10: 675–687
Cuadros CS (2025) The origins of communal roosting behaviour in birds. MSc Thesis, University of British Columbia (Okanagan), Kelowna, British Columbia, Canada
Gilbert C, McCafferty D, Le Maho Y, Martrette J, Giroud S, Blanc S, Ancel A (2010) One for all and all for one: The energetic benefits of huddling in endotherms. Biological Reviews 85(3): 545–569
Hilty SL (2011) Family Thraupidae (Tanagers). En: del Hoyo J, Elliott A, Christie DA (eds) Handbook of the Birds of the World. Vol. 16: Tanagers to New World Blackbirds. Lynx Edicions, Barcelona, pp 46–329
Isler ML, Isler PR (1999) The tanagers: natural history, distribution and identification. Smithsonian Institution Press, Washington
Kriebel R, Oviedo-Brenes F (2013) A new species of Miconia from the remaining primary forest at Las Cruces Biological Station in Costa Rica. Phytotaxa 126(1): 55–60
Skutch AF (1954) Life histories of Central American birds (families Fringillidae, Thraupidae, Icteridae, Parulidae, and Coerebidae). Pacific Coast Avifauna 31: 1-448
Ward P, Zahavi A (1973) The importance of certain assemblages of birds as “information centres” for food finding. Ibis 115: 517–534
Weatherhead PJ (1983) Two principal strategies in avian communal roosts. American Naturalist 121(2): 237–243
Winkler DW, Billerman SM, Lovette IJ (2020) Finches, Euphonias, and Allies (Fringillidae), version 1.0. En: Birds of the World, Billerman SM, Keeney BK, Rodewald PG, Schulenberg TS (eds). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.fringi1.01. Accedido el 15/3/2026
Wiebe RA (2019) Observations of Blue-naped Chlorophonias (Chlorophonia cyanea) in the lowlands of the Madre de Dios Department, Peru, with comments on the species’ presence in the Amazonian lowlands. Boletín UNOP 14(1): 5–9
Zahawi RA, Duran G, Kormann U (2015) Sixty-seven years of land-use change in southern Costa Rica. PLOS ONE 10(11): e014355
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