Competition and the structure of bird communities.
D000818:Animals; D005075:Biological Evolution; D001717:Birds / Q000254:growth & development / Q000502:physiology*; D002980:Climate; D003163:Competitive Behavior; D004463:Ecology; D004777:Environment; D005060:Europe; D005260:Female; D008297:Male; D009656:North America; D011153:Population; D013020:South America; D013045:Species Specificity