Učitavanje...
Population declines in North American birds that migrate to the neotropics.
Using data from the North American Breeding Bird Survey, we determined that most neotropical migrant bird species that breed in forests of the eastern United States and Canada have recently (1978-1987) declined in abundance after a period of stable or increasing populations. Most permanent residents...
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| Glavni autori: | , , , |
|---|---|
| Format: | Artigo |
| Jezik: | Inglês |
| Izdano: |
1989
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| Teme: | |
| Online pristup: | https://ncbi.nlm.nih.gov/pmc/articles/PMC298126/ https://ncbi.nlm.nih.gov/pubmed/2798430 |
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