Sources, sinks, and drains in double breeding bird species?
Gerald R
GR
Urquhart
D025041:Animal Migration; D000818:Animals; D001717:Birds / Q000502:physiology*; D001947:Breeding; D003247:Conservation of Natural Resources; D017753:Ecosystem; D005260:Female; D008297:Male; D008800:Mexico; D011158:Population Growth; D012098:Reproduction; D012621:Seasons; D014481:United States