Cassin's Sparrow

Peucaea cassinii

Order:
Passeriformes
Family:
Passerellidae
Sections

Other

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Internal Anatomy

Wolf (3) presented measurements of humerus, ulna, carpus, femur, tibiotarsus, tarsometatarsus. Cassin's Sparrow has relatively long legs compared to other sparrows in the genus Peucaea.

Mean testis size: 4.99 g (n = 12; mean body mass of sampled birds = 18.2 g) (27). Testis size is relatively small compared to body size, the smallest testis/body ratio of 19 North American sparrows. Four species with smallest ratios were all in xeric grasslands (27).

Recommended Citation

Dunning, J. B., Jr., R. K. Bowers Jr., S. J. Suter, and C. E. Bock (2018). Cassin's Sparrow (Peucaea cassinii), version 2.0. In The Birds of North America (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.casspa.02