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Changes In The Breeding Bird Community Of Subtropical Evergreen Forest In The Lower Rio Grande Valley Of Texas, 1970s-1990s, Timothy Brush, Alberto Cantu
Changes In The Breeding Bird Community Of Subtropical Evergreen Forest In The Lower Rio Grande Valley Of Texas, 1970s-1990s, Timothy Brush, Alberto Cantu
Biology Faculty Publications and Presentations
Breeding-bird censuses conducted in 1994-1996 at the Santa Ana National Wildlife, southern Texas were compared to those done on the same site in 1973-1978. The study site was described as subtropical evergreen forest in the 1970s, but is now thorn-forest with remnant evergreen forest. Canopy cover was incomplete and lower and trees were smaller and more densely packed in 1994-1996 than in 1973-1978. Seven bird species typical of thorn-forest and thorn-scrub, which were not present in 1973-1978, made up 20% of the breeding bird community in 1994-1996. Species tolerant of thorn-forest and thorn-scrub made up 76.0% of the breeding bird …