The breeding history of a male Chimney Swift (Chaetura pelagica) has been traced in detail over a period of 13 years (1947-1959), which is the longest continuous record known for any individual of this species. During this ...

This report describes the development of a simple, rapid method for the kinetic assay of tryptophan pyrrolase in Drosophila. By means of this method, one can readily make simultaneous measurements of tryptophan pyrrolase ...

An instrumentation and method for analysing the spatial behaviour of optical properties of pertinent specimens is described, which performs opto-mechanical scanning with a multi-detector arrangement, uses special amplifiers ...

Because feather-replacement patterns influence the validity of aging criteria, 21 captive and 47 wild-trapped Ruffed Grouse from Ohio were studied to determine if their wing and tail molt is comparable to that of more ...

The Natural Area known as the "Tree Farm" is a 78-acre Beech-Maple-White Oak forest in east-central Defiance County. Standard collection techniques revealed 6 species of amphibians, 7 reptiles, and 14 mammals present in ...