Selection of maternity roosts by big brown bats

Article Abstract:

Several methods have been used to control bat colonies in buildings, with exclusion a recommended method, although this can be difficult to achieve. Factors influencing the selection of maternity roosts by big brown bats were investigated, and it was found that they selected older buildings that were more accessible, and had higher attic temperatures, with wider temperature gradients. All access points should be limited to discourage bats from establishing a maternity roost, and attic temperatures should be reduced during the summer, to make them less suitable.

Natural history, Animal colonies, Colonial animals, Animal housing

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Comparisons of lethal and nonlethal techniques to reduce raccoon depradation of sea turtle nests

Article Abstract:

Raccoon predation on sea turtle eggs and hatchlings is of concern to conservation biologists and resource managers, and a study compared the efficiency and cost of three methods of controlling raccoon depradation. This included the lethal removal, nonlethal conditioned taste aversion (CTA) and nest screening. Lethal removal was not effective, and no significant effect on nest depradation rate was noted with CTA. Nest depradation was significantly reduced through nest screening, but it is a labour intensive and costly method.

Management, Protection and preservation, Raccoons, Biotic communities, Sea turtles

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Characteristics of feeding roosts of Virginia big-eared bats in Daniel Boone National Forest

Article Abstract:

A study of the use of cliff habitat by the Virginia big-eared bat (Plecotus townsendii virginianus) in the Daniel Boone National Forest (DBNF), Kentucky, reveals that the bats use cliff shelters as feeding roosts. Rock shelters with wide entrances and deep passages are chosen. The cutting of trees in the area should be avoided since bats are sensitive to disturbance.

Food and nutrition

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