Breeding chronology of mottled ducks in a Texas coastal marsh

Journal of Field Ornithology


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The relationship between breeding chronology of Mottled Ducks (Anas fulvigula fulvigula) and wetland conditions at San Bernard National Wildlife Refuge was examined over a 3-yr period. Median nest initiation dates varied by as much as 68 d among years. Initiation occurred earlier in 1985 and 1987 versus 1986 (P < 0.05). Nesting initiation was not associated with winter and spring temperatures, but late nesting occurred in 1986 following low rainfall during fall and winter. Low rainfall caused low water levels in all marsh types. Water levels and wetland availability may influence nesting dates by limiting the food resources available to prenesting and nesting Mottled Ducks.

Publication type Article
Publication Subtype Journal Article
Title Breeding chronology of mottled ducks in a Texas coastal marsh
Series title Journal of Field Ornithology
Volume 63
Issue 2
Year Published 1992
Language English
Publisher Wiley
Contributing office(s) Alaska Science Center, Coop Res Unit Atlanta
Description 8 p.
First page 195
Last page 202
Country United States
State Texas
Other Geospatial San Bernard National Wildlife Refuge
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