More than 600 late Wisconsin mastodon occurrences are known from the glaciated and periglacial portions of eastern North America. Most of of them have been found in poorly drained lowlands, swamps, and valleys, and on the ...

Red-winged Blackbirds (Agelaius phoeniceus) were studied at Toledo, Ohio, in an upland habitat in 1964 and 1965, and at Battle Creek, Michigan, in a marsh habitat in 1965. Nestlings were weighed and measured each day. In ...

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 ...