A Pantropical Comparison of Bird Community Structure on Six Lowland Forest Sites

Effects of forest fragmentation on amazonian understory bird communities

“…Following Karr (1971), if we define as rare any spec i es represented by less than of 2¾ of individuals banded, 127 species, or 90% of the community, are rare. The large number of rare species is typical of tropical forests (Karr, 1971;Lovejoy,1975;Pearson, 1977;Wong, 1986 Capture rates from undisturbed, virgin forest net 1ines decl ine gradually over time according to the relation y = .227 -.06 χ where y is the capture rate/net-hour and χ is the number of days since the first sample in the course of a monthly sampling regime (Bierregaard & Lovejoy in press). While capture rate declined slowly, the percent re capture on a given sample day approaches an asymptote of 42.7% according to the equation y = .427 -·429 (·364) κ where y is the recapture percentage and χ is the days since first sample as above (Bierregaard & Lovejoy in press).…”

Foraging Ecology of Temperate‐Zone and Tropical Woodpeckers

“…It also provides additional support for the well-established theory that more species can coexist in tropical forests because of the wider range of resources (Orians 1969, Lovejoy 1974, Pearson 1977). This appears to be the primary explanation for the greater number of excavating species in Guatemala than in the two northern localities.…”

Diversity and Abundance of Birds of Prey and Owls in Four selected Areas in South Western Nigeria

“…There is also some evidence that reduced over-winter survival in dry, open habitats in subSaharan Africa may be a contributing this factor. Habitat destruction, desertification and lower resource availability in the Sahel zone due to reduced rainfall and increased agricultural intensification may explain these lower overwinter survival rates two rest blocks, and this suggest that human disturbance in populated areas alters bird species richness (Pearson, 1977), as they avoid predation. Similarly, Herkert (2009) reported that the loss of habitat to urbanization reduces the quality of the remaining vegetation thus affect the population of avian species in the area.Avian behavioral pattern was found to play a big role in bird diversity and distribution among the four areas sampled (Cody 1985).…”