Male Uro-genital Organ

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“Uro-genital organs of male embryo bird; from Owen, after Muller. a, kidneys: b, ureters; c, wolffian bodies; d, their ducts, to be sperm-ducts; e, genital glands, to become testicles; f, adrenals.” Elliot Coues, 1884


Bird Anatomy


Elliot Coues Key to North American Birds (Boston, MA: Estes and Lauriat, 1884)


TIFF (full resolution)

1323×2400, 1.2 MiB

Large GIF

564×1024, 168.8 KiB

Medium GIF

352×640, 86.3 KiB

Small GIF

176×320, 28.0 KiB