Recovery of Nesting Bald Eagles in Texas
| Autor: | Sarah T. Saalfeld, Ricky W. Maxey, Warren C. Conway, Brent Ortego, Chris Gregory |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Southeastern Naturalist. 8:83-92 |
| ISSN: | 1938-5412 1528-7092 |
| DOI: | 10.1656/058.008.0108 |
| Popis: | One of the most successful conservation stories in United States' history resulted in Haliaeetus leucocephalus (Bald Eagle) being removed recently from the federal endangered species list. Few studies, however, have documented regional long-term recovery trends for Bald Eagles. We quantified Bald Eagle nesting density, distribution, and productivity trends by using aerial surveys of nests located in 69 counties in eastern Texas from 1971–2005. The total number of occupied nests, productive nests, and offspring produced increased exponentially during that time, with the most dramatic increases occurring from 1995–2005. Since 1971, the total number of occupied nests increased 13% per year, from 5 in 1971 to 157 in 2005, and the total number of young produced also increased 13% per year, from 6 in 1971 to 195 in 2005. Apparent nest success estimates (50–100%) and mean brood size (1–2 young/nest), however, remained relatively consistent from 1971 to 2005. By 1989, Bald Eagles in Texas exceeded recove... |
| Databáze: | OpenAIRE |
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