4»JO I'iKLI) MUSHUM ()!• NaTI'RAL IIisTOUV ZooLOGY, Vf)L. IX. 



(k'scrtcd crow's or hawk's nest is usrd. The eggs are white, two to 

 four in number, and measure about 2 x 1.75 inches. Breeds in March 

 and April and farther south somewhat earHer. There is a set of 3 

 eggs in the Field Museum collection taken in Clark Co., Missouri, 

 March 1, i8q6. 



The "hoot" of the Barred Owl ma\- be descriljed as hoo-hoo, 

 h-hoo-hoo, ho-hoo-0-0 . The notes are as a rule several tones higher 

 than those of the Great Horned Owl and the hoot is longer. It also 

 utters a wild scream. 



(n-iius SCOTIAPTHX Swainson. 



177, Scotiaptex nebulosa (Forster). 

 Great Gray Owl. 



Scotiaptex ciucrca (Gmel.), A. O. U. Check List, 1895, P- M4- 

 Distr. : Arctic species which occurs in winter as far south as New 

 England and Illinois. 



Great Gra\- Owl. 



