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Predation, scramble competition, and the vigilance group size effect in dark-eyed juncos (Junco hyemalis)

โœ Scribed by Steven L. Lima; Patrick A. Zollner; Peter A. Bednekoff

Publisher
Springer
Year
1999
Tongue
English
Weight
110 KB
Volume
46
Category
Article
ISSN
0340-5443

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โœ Smulders, T. V. ;Casto, J. M. ;Nolan, V. ;Ketterson, E. D. ;DeVoogd, T. J. ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 95 KB ๐Ÿ‘ 2 views

## This study investigates the effects of captivity and testosterone treatment on the volumes of brain regions involved in processing visual and spatial information in adult dark-eyed juncos (Junco hyemalis). We treated captive and free-living male juncos with either testosterone-filled or empty im