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Conservation Science

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Cassin's Sparrow
Illustrations by David Allen Sibley from The National Audubon Society: The Sibley Guide to Birds published by Alfred A. Knopf, Inc., New York. Copyright © 2000 by Chanticleer Press and David Allen Sibley. No illustrations may be copied, reproduced, or reused without the express written permission of the copyright holders.

Status: Although there are no estimates of total populations size, the species is demonstrating significant population declines across most of its range.

Habitat/Range: Arid grasslands with scattered shrubs such as sandsage or yuccas. Breeding range includes parts of Colorado, Nebraska, Kansas, Oklahoma, Texas, New Mexico, and northern Mexico. Non-breeding range includes Arizona, New Mexico, Texas, and 13 states in northern Mexico.

Threats: Cassin's Sparrow are highly responsive to the vegetative structure of arid shrub grasslands and are therefore threatened by grazing, shrub clearing and other human activities that change habitat structure.

Restoration Potential: Protecting arid grasslands with shrub vegetation from clearing, plowing, and cultivation is essential to restoration.

Places We Are Protecting:

  • Bohart Ranch/Chico Basin, Colorado
  • Fox Ranch/Arikaree River, Colorado
  • Smokey Valley Ranch/Chalk Bluffs, Kansas
  • Saltillo Grasslands Protected Area, Mexico

Learn More:
View a species management abstract for this bird

Illustrations by David Allen Sibley from The National Audubon Society: The Sibley Guide to Birds published by Alfred A. Knopf, Inc., New York. Copyright © 2000 by Chanticleer Press and David Allen Sibley. No illustrations may be copied, reproduced, or reused without the express written permission of the copyright holders.