Responses of bird populations in a Puerto Rican forest to Hurricane Hugo: the first 18 months

Article Abstract:

Observations in the Puerto Rican rain forest of El Verde before and after Hurricane Hugo shows that birds are the species most affected by any displacement of habitat. Significantly, birds in the hurricane-prone Caribbean islands, have a greater breadth of habitat and ability to adjust. Canopy dwellers move to understory while fruit-eating birds shift to pre-existing gaps, resulting in an initial increase in post-hurricane omnivores and insectivores and decline in nectarivores. Insufficient foliage differences fails to promote a differential habitat even after one year of a hurricane.

Influence, Environmental aspects, Hurricanes

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Song characteristics and variation in a population of Bananaquits on Puerto Rico

Article Abstract:

A study was conducted to examine variations in the singing traits of Bananaquits (Coereba flaveola) on Puerto Rico. Vocalizations of banded juvenile and adult male Bananaquits were recorded from 1988 to 1991. Bananaquits were characterized by a 120-340 song-type repertoire and high singing rates. Variations in songs were created by introducing or deleting notes at the end while few changes were made in the introductory notes. Song variation was found to reduce with age while no relationship could be ascertained between song continuity and song versatility.

Puerto Rico, Birdsongs

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The composition and foraging ecology of mixed-species flocks in pine forests of Hispaniola

Article Abstract:

Individual birds modify their foraging locations and tactics after joining mixed-species flocks, and their foraging behavior resembles that of the nuclear bird species. Some species gain feeding advantages by associating with other species. A study of 48 bird species in the native pine forest of Hispaniola reveals that most flocks are ubiquitous. Winter migrants form a major part of these flocks. The flocks are cohesive, and show mutual habitat dependencies and species interactions.

Food and nutrition, Habitat (Ecology), Natural history, Habitats, Hispaniola

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