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The Effect of Food Availability on Time and Energy Expenditures of Territorial and Non-Territorial Hummingbirds

โœ Scribed by Donald R. Powers and Todd McKee

Book ID
120975719
Publisher
University of California Press
Year
1994
Tongue
English
Weight
400 KB
Volume
96
Category
Article
ISSN
0010-5422

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Food availability, intrusion pressure an
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โœ Jessica R. Eberhard; Paul W. Ewald ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Springer ๐ŸŒ English โš– 910 KB

Theoretical considerations implicate food availability and intrusion pressure as important determinants of territory size, but empirical studies have led to contradictory conclusions about cause-and-effect relationships among these three variables. To investigate this problem, we provided patches of