A QUANTITATIVE STUDY OF NASAL BRISTLE LENGTH IN THE COMMON AND CHIHUAHUAN RAVENS Journal Article uri icon

Overview

abstract

  •  the proportionately longer nasal bristles of the Chihuahuan raven (Corvus cryptoleucus) have been adduced as a character distinguishing that species from the Common raven (C. corax). in a sample of 113 specimens of the Common raven and 86 of the Chihuahuan we confimed that the average of the bristle-to-bill ratio differs signifiantly in the two species, being 26% greater in the Chihuahuan. Butthe overlap is wide: only 36% of the Chihuahuan ravens and 22% of the Common ravens fell outside the zone of overlap. on the basis of this character, only ravens with a ratio <0.45 can be identifid as the Common, while those with a ratio >0.60 are almost all Chihuahuan.

publication date

  • October 1, 2019

has restriction

  • bronze

Date in CU Experts

  • January 26, 2020 3:40 AM

Full Author List

  • PIEPLOW N; SPENCER A

author count

  • 2

Other Profiles

International Standard Serial Number (ISSN)

  • 0045-3897

Additional Document Info

start page

  • 255

end page

  • 259

volume

  • 50

issue

  • 4