Survival of mallard ducklings, broods, and hens in Western New York / Andrew P. Weik and Richard A. Malecki.
Material type:
TextSeries: Northeast Wildlife ; 54Publication details: New York, NY : 1996. Northeast Wildlife,Description: 12 p. : ill. ; 28 cmOnline resources: Abstract: We studied duckling and brood survival of mallards in the Lake Plain region of western New York during 1991 and 1992. Fifty-four females and 80 ducklings from 37 broods were equipped with transmitters and monitored for 60 days. Duckling survival was 0.36 (SD = 0.10), with no difference between years (P = 0.35). Eighty-six percent (n = 49) of known deaths of ducklings occurred within the first 14 days of life.Brood survival was 0.72 (SD = 076), with no difference between years (P = 0.24). Twelve transmitter-equipped females lost entire broods. Average female survival was 0.80 (SD = 0.06). Mean brood size at fledging was 3.91 (SD = 1.30) in 1991, 3.58 (SD = 2.31) in 1992, and 3.74 ducklings (SD = 1.86) in both years combined.
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Includes bibliographical references.
We studied duckling and brood survival of mallards in the Lake Plain region of western New York during 1991 and 1992. Fifty-four females and 80 ducklings from 37 broods were equipped with transmitters and monitored for 60 days. Duckling survival was 0.36 (SD = 0.10), with no difference between years (P = 0.35). Eighty-six percent (n = 49) of known deaths of ducklings occurred within the first 14 days of life.Brood survival was 0.72 (SD = 076), with no difference between years (P = 0.24). Twelve transmitter-equipped females lost entire broods. Average female survival was 0.80 (SD = 0.06). Mean brood size at fledging was 3.91 (SD = 1.30) in 1991, 3.58 (SD = 2.31) in 1992, and 3.74 ducklings (SD = 1.86) in both years combined.