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ID: b10138225_4
Reproductive system of a female bird in breeding condition from Coues's Key to North American Birds
ID: b10138225_3
Urogenital system of a male bird in breeding condition from Coues's Key to North American Birds
ID: b10138225_2
Illustration of a disected pigeon from Coues's Key to North American Birds
ID: b10138225_1
Upper wing feather arrangement from Coues's Key to North American birds
