| Abstract: | Because of its geographic position, Louisiana plays an important role in the hemispheric-scale phenomenon known as the Nearctic-Neotropical bird migration system. Each year millions of landbirds migrate across or near to the coast of the Gulf of Mexico. Birds migrate in large, broad fronts that sometimes exceed 2 million individuals, and there is an advantage for them to take a direct
north-south route (the shortest distance).
* During migration seasons, nearly all of the migratory landbird species of the eastern United States, as well as many western species, use the coastal plains of the western gulf.
* Spring migrants arrive with depleted energy reserves and depend on Louisiana‘s coastal habitats to provide food and cover after long gulf crossings.
* Fall migrants depend on Louisiana?s coastal habitats for food to store fat reserves just prior to gulf crossings in autumn.
* Mortality during the migratory period can be high. Recent research on the black-throated blue warbler (Dendroica caerulescens) indicates that more than 85% of the annual mortality for the species occurs during migration.
Migrants en route tend to concentrate in habitats adjacent to ecological barriers; DOI land managers need to identify key coastal landscape features that are important to these birds.
Because of the vastness of the North American continent, it is nearly impossible to delineate movement patterns and migration pathways by using traditional ground-based surveys. |
| Genre: | USGS Numbered Series |
| ProdID: | 70894 |
| Citation Author: | Smith, Gregory J.; Barrow, Wylie |
| Citation Contributing Office: | National Wetlands Research Center |
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| Citation Language: | ENGLISH |
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| Citation Month: | Jun |
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| Citation Phsyical Description: | 1 p. |
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| Citation Publisher: | Geological Survey (U.S.) |
| Citation Series: | Fact Sheet |
| Citation Series Code: | FS |
| Citation Series Number: | 2005-3069 |
| Citation Search Results Text: | Migratory Bird Pathways and the Gulf of Mexico: Importance of Louisiana‘s Coast; 2005; FS; 2005-3069; Smith, Gregory J.; Barrow, Wylie |
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| Citation Year: | 2005 |
| Type: | citation/reference |
| Text: | Migratory Bird Pathways and the Gulf of Mexico: Importance of Louisiana‘s Coast; 2005; FS; 2005-3069; Smith, Gregory J.; Barrow, Wylie |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/fs_2005_3069.jpg |
| URL (INDEX PAGE): | http://www.nwrc.usgs.gov/factshts/2005-3069/2005-3069.htm |
| URL (DOCUMENT): | http://www.nwrc.usgs.gov/factshts/2005-3069.pdf |
| Date Other: | Mon, 18 Jul 2005 00:00 -0500 |
| Publisher: | Geological Survey (U.S.) |
