We were able to determine the level of habitat specialization for
thirty six of the fifty seven species recorded. The twenty onespecies (see Appendix Fig. A2) with six or fewer recordings in our
sample could either be genuinely rare or, by chance, not included
in the study sites. Although sixteen of these species occurred in
the semi-deciduous forest (ten and eight species in the dense forest
and the mixed forest, respectively; Appendix), many of these speies
are known from prior studies to be tolerant to forest edg e, suggesting
habitat generalization. Examples are species such as
Thamnophilus doliatus (Barred Antshrike), Lepidocolaptes angustirostris
(Narrow-billed Woodcreeper), Synallaxis spixi (Spix’s
Spinetail) and Synallaxis frontalis (Sooty-fronted Spinetail;
Remsen, 2003; Zimmer and Isler, 2003). Including these poorly
sampled species would not likely change our interpretation that
bird communities in the semi-deciduous forest are characterized
by generalists.