Coastal breeding bird phenology on the dredged-material islands of the Baptiste Collette Bayou, US Army Corps of Engineers, New Orleans District, Louisiana
U.S. Army Corps of Engineers
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Abstract
| Coastal bird populations in North America have experienced significant population declines over the past four decades, and many species have become dependent upon human-made islands and other sediment-based habitats created through dredged material deposition. We monitored the breeding phenology of coastal bird populations utilizing dredged-material islands and open depositional areas in the Baptiste Collette Bayou in coastal Louisiana. Monitoring began in early May, prior to when most coastal species begin nesting, and continued through late August, when most breeding activity has ceased. Semimonthly surveys included area searches by foot and boat. Two deposition areas and one island supported large numbers of foraging, roosting, or breeding birds; surveys on these areas included using spotting scopes to identify species and count nests or young. Six islands and two open deposition areas were monitored. We also collected high-definition and lidar imagery using an uncrewed aerial system (UAS) in June, during peak nesting season. We recorded 77,474 cumulative detections of 68 species. Virtually all colonial nesting birds (terns and skimmers) nested on Gunn Island in 2021. We discuss these results in the context of dredged-material deposition by the US Army Corps of Engineers, New Orleans District, and offer recommendations for management of these areas. |
Suggested Citation
Guilfoyle, M., Anderson, A.N., Jackson, S.S., Jung, J.F., Zenzal, T.J., Suedel, B.C., Corbino, J.M., 2024, Coastal breeding bird phenology on the dredged-material islands of the Baptiste Collette Bayou, US Army Corps of Engineers, New Orleans District, Louisiana, vii,, https://doi.org/10.21079/11681/48473.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | Other Government Series |
| Title | Coastal breeding bird phenology on the dredged-material islands of the Baptiste Collette Bayou, US Army Corps of Engineers, New Orleans District, Louisiana |
| DOI | 10.21079/11681/48473 |
| Publication Date | May 08, 2024 |
| Year Published | 2024 |
| Language | English |
| Publisher | U.S. Army Corps of Engineers, Engineer Research and Development Center |
| Contributing office(s) | Wetland and Aquatic Research Center |
| Description | vii, |
| Country | United States |
| State | Louisiana |
| Other Geospatial | Baptiste Collette Bayou |