FAMILY STRIGID^. OWLS. 



181 



FAMILY STRIQID/E. 



Owls. 



Radiated disk of feathers surrounding the eye; plumage, soft; toes, 

 armed with strong curved talons. 



Qroup 1. Wing, less than 8.50 inches long. 

 Section 1. Toes, thickly feathered. 



Richardson's Owl. 



Siiw-whct Owl. 



Wing, less than 6.10 ; upper plumage, cl:iik cinnamon brown, more or less 

 marked with white; underparts, whitish, streaked with brown; immature birds 

 have much white about the face. 



Saw-whet Owl. 

 Acadian Owl. 



Nyctala acadica. 

 See No. 306. 



Wing, over 6.10; upper plumage, dark cinnamou brown, more or less marked 

 with white; underparts, brown and white. 



Richardson's Owl. 



Nijctala tengmalmi richardsoni. 

 See No. 305. 



