Effects of harness transmitters on behavior and reproduction of wild mallards
作者： Pamela J. Pietz , Gary L. Krapu , Raymond J. Greenwood , John T. Lokemoen
DOI: 10.2307/3809068
关键词: Ecology 、 Important research 、 Nest 、 Avian clutch size 、 Biology 、 Waterfowl 、 Reproduction 、 Zoology
摘要: Radio telemetry has been an important research tool in waterfowl studies for >20 years, yet little effort made to evaluate potential effects of transmitters on the birds that carry them. As part a 4-year mallard (Arras platyrhynchos) study prairie pothole region North Dakota and Minnesota, we compared radio-marked unmarked female mallards terms percent time observed feeding, resting, preening; nest initiation date; clutch size egg volume. Radio-marked females carried 23-g back-mounted transmitter attached with 2-loop harness (Dwyer 1972). On average, tended feed less, rest preen more, initiate nests later, lay smaller clutches eggs than
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