Variation in Western Sparrow Hawks

This publication has 4 references indexed in Scilit:

• Life histories of North American birds of prey pt. 2: Orders Falconiformes and Strigiformes
  Bulletin of the United States National Museum, 1938
• The Colorado Sparrow Hawks
  The Auk, 1927
• The Present State of the Ornis of Guadaloupe Island
  Ornithological Applications, 1908
• A Study of the Sparrow Hawks (Subgenus Tinnunculus) of America, with Especial Reference to the Continental Species (Falco sparverius Linn.)
  The Auk, 1892