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- Title
Food Habits of Dabbling Ducks During Fall Migration in a Prairie Pothole System, Heron Lake, Minnesota.
- Authors
Wersal, Ryan M.; McMillan, Brock R.; Madsen, John D.
- Abstract
We conducted an analysis of dabbling duck food habits in the fall of 2002 and 2003 in the Heron Lake system. Gizzard contents of hunter-harvested birds were analyzed using the percent aggregate volume method to determine what food items were consumed and in what quantity. Curltop Ladysthumb (Polygonum lapathifolium) was the food item consumed most often (82.2%) and in the greatest volume (34.2 ml). Sago Pondweed (Stuckenia pectinata) was the only food item of which multiple plant parts were consumed. However, the seeds and tubers only comprised 1.27 and 0.07 of the total aggregate percent.
- Subjects
HERON Lake (Jackson County, Minn. : Lake); MINNESOTA; DUCK food; FOOD habits; ANIMAL migration; GIZZARD; AVIAN anatomy; POLYGONUM; SAGO pondweed
- Publication
Canadian Field-Naturalist, 2005, Vol 119, Issue 4, p546
- ISSN
0008-3550
- Publication type
Article
- DOI
10.22621/cfn.v119i4.186