Biotemas (Jun 2006)
Composition of mixed flocks of understory forest birds in areas of the Atlantic coast and lowlands of Santa Catarina state, southern Brazil
Abstract
An accompaniment of forest mixed flocks was carried in two localities of Santa Catarina, southern Brazil, one on a forest hillside of the Atlantic on the Island of Santa Catarina (June to September, 2000) and another in a quaternary plain forest of the Volta Velha Reserve, Itapoá (June to November, 2000). Sixty-four species of birds were registered from the 79 identified flocks, 33 of which showed a frequency of occurrence above 10%. The flocks had an average number of six species. The nuclear species responsible for the aggregation and compacting of the flocks, for the two localities was Basileuterus culicivorus. The mixed flocks presented little difference in their composition in the two areas. This is probably due to the history of the colonization and the distinct forest formations of the two areas involved.
