نتایج جستجو برای: snyder
تعداد نتایج: 2231 فیلتر نتایج به سال:
Unambiguous identification of the sex of live birds is critical in numerous areas of avian research, including studies of alternative reproductive tactics, sexratio manipulation, and conservation biology (e.g. van Rhijn 1973, Snyder and Snyder 1989, Stamps 1990). However, identification of sex can be problematic for researchers dealing with young birds or sexually monomorphic species. Technique...
The Upper Triassic Snyder quarry is the second-most productive theropod locality in the Chinle Group. Skull and postcranialelements, particularly tibiae, collected from the Snyder quarry during the last three field seasons demonstrate the presence of at least four individuals of two taxa. The smaller theropod strongly resembles, but is distinct from, the holotype of Eucoelophysis baldwini Sulli...
-Although Snail Kites (Rostrhamus sociabilis) in Florida and Venezuela fed mostly on Pomacea snails, I documented three alternative foods. In Florida, kites fed on five species of small turtles, but especially on Sternotherus odoratus and Kinosternon bauri. During the height of a drought, one kite in Florida fed on a small aquatic snail (Viviparus georgianus) for 5 weeks.In Venezuela, freshwate...
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