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Your search keyword '"Clark, R.G."' showing total 4 results
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4 results on '"Clark, R.G."'

3. Tree Swallow (Tachycineta bicolor) foraging responses to agricultural land use and abundance of insect prey

Author

Stanton, R.L., Morrissey, C.A., and Clark, R.G.

Subjects
Agriculture -- Environmental aspects, Land use -- Environmental aspects -- Canada, Foraging -- Research, Insects -- Distribution -- Environmental aspects, Swallows -- Food and nutrition -- Environmental aspects, Ornithological research, Company distribution practices, Zoology and wildlife conservation
Abstract

Abstract: Throughout North America, many species of aerial insectivorous birds have exhibited steep declines. The timing of these declines coincides with changes in agriculture, perhaps signaling a causal link. Increased [...]

Published
2016

4. Timing of nesting of upland-nesting ducks in the Canadian prairies and its relation to spring wetland conditions

Author

Raquel, A.J., Devries, J.H., Howerter, D.W., Alisauskas, R.T., Leach, S.W., and Clark, R.G.

Subjects
Zoological research, Nest building -- Research, Ducks -- Behavior -- Environmental aspects, Zoology and wildlife conservation
Abstract

Abstract: Timing of breeding varies among waterfowl species and individuals, with strong effects on reproductive success, and may be related to habitat quality. Here, we analyse the start, span, and [...]

Published
2016

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