J. W. Goertz

Nesting Effort and Territorial Male Birds in a Breeding Bird Community

Number of active nests was compared with number of territories of singing male birds determined by spot mapping for 16 common species in north Louisiana. The number of active nests per number of territories ranged from 0 to 2.3. Carolina wrens (Thryothorus ludovicianus), white-eyed vireos (Vireo griseus), yellow-billed cuckoos (Coccyzus americanus), northern orioles (Icterus galbula), orchard orioles (Icterus spurius), common grackles (Quiscalus quiscula), eastern meadowlarks (Sturnella magna), and bobwhites (Colirr.us virginianus) had less than 0.6 nests per territory. American robins (...

Year
1981

Evaluation of Specific Scent Station Variables in Northcentral Louisiana

In an attempt to determine a more effective means of utilizing scent station data to evaluate furbearer population trends, 3 scent types, 2 tracking surfaces and 3 habitat types were analyzed in northcentral Louisiana. Observations at 775 stations on 2 successive days during the fall of 1979, summer of 1980 and fall of 1980, resulted in 574 visits by 13 different groups of mammals. Bobcat (Felis rufus) urine produced the highest visitation rates for coyotes (Canis latrans) when compared to fatty acid scent and rhodium (P < 0.05). However, there was no significant difference (P> 0.05...

Year
1981