David Brewer’s scientific contributions

... In the case of Eurasian Wren Troglodytes troglodytes, some authorities (e.g. Birds of the World, Kroodsma et al. 2020) consider the Cyprus breeding population an endemic subspecies T. t. cypriotes. We also included three species without any taxonomic distinction between these islands and the closest continental populations: Eurasian Blackbird Turdus merula, Common Chaffinch Fringilla coelebs and Sardinian Warbler Sylvia melanocephala, the last a recent colonizer to Cyprus within the past 30 years (Frost 1995). ...

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Genomic data reveal contrasting patterns of divergence among island and mainland birds of the Eastern Mediterranean

... Other records of North american wrens preying on lizards include a Common (Powell andHenderson 2008, kroodsma andBrewer 2020). The few published reports of wrens feeding upon lizards indicate that most lizards are small species or juveniles, up to about 100 mm in total length and with snout-vent lengths approximating the size of large invertebrate prey that wrens routinely capture. ...

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Apparent Predation by Rock Wren of Common Sagebrush Lizard

... El Sotorrey pechirrufo (Pheugopedius rutilus) fue la especie más abundante lo cual podría estar relacionado con el comportamiento de forrageo, pues a menudo lo hacen en pareja o grupos familiares (Kroodsma y Brewer, 2020). Dado que durante los meses de mayo y junio se ha reportado el aumento en el número de insectos (Aparicio y Pérez, 1995), esto explicaría el gran número de aves insectívoras registradas durante nuestro estudio, entre ellas P. rutilus. ...

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Diversidad de la avifauna en cinco senderos del Parque Natural Metropolitano de la Ciudad de Panamá, Panamá Diversity of birdlife in five trails of the Metropolitan Natural Park of Panama City, Panama

... Localidad del volantón de T. nicefori en la Mesa de Xéridas (Santander, Colombia). Ilustración tomada deKroodsma et al. (2019). ...

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Descripción morfológica de un volantón de Thryophilus nicefori (Meyer de schauensee, 1946) en el noreste de los andes colombianos con notas sobre su ecología

... Moustached Wrens are also insectivorous and resident, living in the dense understory of humid forests and forest edges [23]. Its song is also normally emitted in duets [24], which are characterized by a series of quick, happy phrases that are frequently repeated and are sometimes followed by a quick "cho cho cho" [23]. ...

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Living Together, Singing Together: Revealing Similar Patterns of Vocal Activity in Two Tropical Songbirds Applying BirdNET

... The resident and insectivorous Thrush-like Wren has a cooperative character and is usually found in groups [25]. They primarily inhabit the canopies of humid forests, including disturbed areas [26]. Its song is described as a variable number of "chuk, chuk, chu-rú" [25]. ...

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Living Together, Singing Together: Revealing Similar Patterns of Vocal Activity in Two Tropical Songbirds Applying BirdNET

... Given these challenges in understanding and categorizing interaction intensities, it is essential to consider the spatial variation in interaction intensity of particular species, for instance Henicorhina leucosticta and Habia fuscicauda, two bird species generally considered as facultative ant-followers. Individuals of H. leucosticta join E. burchellii swarms in Los Tuxtlas, Mexico with a frequency of 57% (Coates-Estrada and Estrada 1989), while in Costa Rica this bird species shows a visitation frequency of 31% to E. burchellii swarms (Chaves-Campos 2003), and in general, H. leucosticta is not considered a true swarm-follower (Kroodsma and Brewer 2020). Similarly, H. fuscicauda is the bird species with the highest attendance at swarms of two species of army ants, E. burchellii and L. praedator, in Los Tuxtlas, Mexico (Coates-Estrada and Estrada 1989), while in the Yucatán Peninsula H. fuscicauda was recorded as an occasional swarm-follower (Willis 1960). ...

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Interaction intensity as determinant of geographic range overlap between ant-following birds and army ants

... Both species have parapatric distributions along the precipitation gradient, where C. z. brevirostris occurs in lower abundance and is restricted to the wet region and C. fasciatus to the dry region (Ridgely and Greenfield 2001) (Fig. 1). Both species feed mostly on insects and forage in dense vegetation on edges and clearings (Ridgely and Greenfield 2006, Kroodsma and Brewer 2020a, 2020b Campylorhynchus zonatus occurs from eastern Mexico to northwestern Ecuador, including four disjunct populations and seven subspecies that inhabit edges, open disturbed areas, and wet forests (Kroodsma and Brewer 2020a). The subspecies C. z. brevirostris includes one population in northern Colombia and another in northwestern Ecuador. ...

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Territorial aggression and coexistence in hybridizing Campylorhynchus: disentangling the roles of climate, resource availability, and species interactions in western Ecuador

... The Magenta petrel Pterodroma magentae is one of the world's rarest seabirds, with a diet mainly of squid, and threatened from predation by feral cats (Johnston et al., 2003). The Santa Marta wren Troglodytes monticola is a small passeriform inhabiting the upper elevations of the Santa Marta Massif in northern Colombia, with a diet characterized by invertebrates (Kroodsma et al., 2019). The last four diet specialist species are the Indigo-winged parrot Hapalopsittaca fuertesi, a frugivorous species from Colombia (Benavidez et al., 2018), the White-backed vulture Gyps africanus, which is an Old-World vulture with a diet of carrion and bone fragments of ungulate carcasses in African savannahs (Phipps et al., 2013), the Orangebellied parrot Neophema chrysogaster that is a small parrot endemic to southern Australia and the Sumatran ground cuckoo Carpococcyx viridis, a large and very elusive species of cuckoo endemic to Indonesia (Erritzøe et al., 2012). ...

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Global distribution and conservation of avian diet specialization

... Both species have parapatric distributions along the precipitation gradient, where C. z. brevirostris occurs in lower abundance and is restricted to the wet region and C. fasciatus to the dry region (Ridgely and Greenfield 2001) (Fig. 1). Both species feed mostly on insects and forage in dense vegetation on edges and clearings (Ridgely and Greenfield 2006, Kroodsma and Brewer 2020a, 2020b Campylorhynchus zonatus occurs from eastern Mexico to northwestern Ecuador, including four disjunct populations and seven subspecies that inhabit edges, open disturbed areas, and wet forests (Kroodsma and Brewer 2020a). The subspecies C. z. brevirostris includes one population in northern Colombia and another in northwestern Ecuador. ...

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Territorial aggression and coexistence in hybridizing Campylorhynchus: disentangling the roles of climate, resource availability, and species interactions in western Ecuador