Nest survival of clay-colored and vesper sparrows in relation to woodland edge in mixed-grass prairies

Article Abstract:

Nest survival of clay-colored sparrows and vesper sparrows relative to the distance nests located from aspen woodland edges and relative to other habitat features near the nest were examined. It was observed that thirteen-lined ground squirrels were common predators far from woodland edges than near, which explained the clay-colored and vesper sparrow nest survival, in relation, to woodland edges whereas for grassland birds nesting near trees and shrubs, nest survival was lower.

Environmental aspects, Sparrows, Nest building, Prairies

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Mallard harvest distributions in the Atlantic and Mississippi flyways during periods of restrictive and liberal hunting regulations

Article Abstract:

In the study conducted, a comparison of the distribution of harvest between a 10-year period of restrictive regulation and a 5-year period of liberal regulations was carried out using categorical data analysis and the bootstrap technique. The results suggest that proportion of harvest of mid-continent mallard populations increased during the liberal period.

Legal issues & crime, Government regulation (cont), Government regulation, Legal/Government Regulation, Hunting, trapping, game propagation, Hunting and Trapping, Hunting & Trapping, Laws, regulations and rules, Protection and preservation, Hunting

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Does presence of permanent fresh water affect recruitment in Praire-nesting dabbling ducks?

Article Abstract:

An evaluation of the development of the permanent water bodies and its effects on the gadwalls and mallards broods and ducklings, of the McClusky canal, was conducted. The results revealed that twelve out of the twenty-five radiomarked gadwalls and mallards hens had experienced total brood loss while 148 ducklings died by day 30 of the project.

North Dakota, Habitat modification, Bird breeding

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