Abstract

VAN DER HEIDEN, Albert M.; CASTILLO-GUERRERO, José Alfredo; VAN DER HEIDEN, Alwin A. K.  and  RUIZ-GUERRERO, Marcela. Characterization of the avifauna of La Guásima, Concordia, southern Sinaloa, Mexico, with emphasis on the species associated with the tropical dry forest and annotations on accidental species and species at risk. Rev. Mex. Biodiv. [online]. 2018, vol.89, n.1, pp.243-267. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2018.1.2114.

We present a list of 253 bird species of the community of La Guásima (LG), a Priority Area for Conservation by Conanp since 2005, situated on the Pacific slope, in the municipality of Concordia, Sinaloa, based on exploratory field trips between 2003 and 2015 and the literature. Of these species, 110 (43.5%) are winter visitors, 58 present some type of endemism and 34 are in danger. Since the tropical dry forest constitutes the dominant vegetation in LG, it was decided to carry out monthly counts along 3 transects of variable length, from January 2009 to January 2010, to document the temporal distribution of richness and abundance, relative abundance and mean flock size of the birds associated with this kind of vegetation. A total of 141 species were observed in the forest. Species richness was highest during autumn and winter due to the presence of neotropical migrants while the 2 intertropical visitors, Myiodynastes luteiventris and Vireo flavoviridis had a noticeable influence on abundance from May to August. The latter and 7 other species were considered dominant. A total of 15 species were gregarious, forming flocks of between 5 and 17 individuals on average. Additional information is provided for accidental species and species at risk.

Keywords : Birds; Tropical dry forest; Richness; Abundance; Flock; Endemic; Risk; Accidental.

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