Seasonal Patterns of Song Structure Variation in a Suboscine Passerine

Seasonal Patterns of Song Structure Variation in a Suboscine Passerine

—Studies of song and its function in suboscine passerines are rare. We examined spatial and temporal variation in song structure in a wild population of Olive-sided Flycatchers (Contopus cooperi) and tested among hypotheses explaining this variation. Repeatable variation in song type was observed both within and among individuals. More than 10% of territorial males expressed atypical song types...

First Documentation of Combinatorial Song Syntax in a Suboscine Passerine Species

Birds with songs having two or more acoustically distinct elements can arrange them either rigidly (i.e., in the same sequence) or flexibly. Flexible song syntax can be achieved either by varying the number of repetitions of elements or by combining elements in different ways. Combinatorial syntax has been documented only in the songs of oscine passerines and in one nonpasserine, but not in the...

Metabolic capacity and the evolution of biogeographic patterns in oscine and suboscine passerine birds.

Biogeographic analyses of passerine birds demonstrate that suboscines are numerically dominant in South America, whereas oscines are dominant elsewhere. This suggests that oscines generally outcompete suboscines and that suboscine dominance likely persists in South America because of its long isolation from other continents, where oscines have diversified. One hypothesis for oscine competitive ...

Asymmetric discrimination of geographical variation in song in a migratory passerine

analyzing patterns of classroom interaction in efl classrooms in iran

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