Abstract
The foraging mode and vertical distribution of tyrant flycatchers of twelve sympatric species (Tyrannidae) were compared between forest edge and savanna in the Brazilian Amazon. Five species can be regarded as aerial salliers or hawkers, four as gleaners, and three as generalist hunters. Their patterns of foraging behavior were significantly different among the species but not in the two habitats. Perch positions changed significantly according to the time of day. Generally the tallest trees in a given plot were chosen, with the larger bird species perching more often at the top of the trees. Factors that affect the structure and behavior of this flycatcher guild are discussed.
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