100 



NORTH AMERICAN BIRDS. 



4.S5I). 



414. 



7S99. 



7449. Strix pnilincola. Natural size. 



4886. Otus wilsonianus. Natural size. 



727a. Scotiaptex cinerciim. Two thirds. 



7899. Nyctalc richardsnni. Natural sUc. 



414. Scops a&io. Natural uzc 



773. Bubo virginianus. Two thirds. 



638. Nyctca nivca. Two thirds. 



7897. Sumia ululi Natural! siie. 



438. Glaucidiuin fcrru^^incuin. Natural size. 



437. Spheotyto liypeara. Natural size. 



