APPENDIX. 693 



FALCU MEXICANUS. 

 PiiAiRiE Falcon. 



DESCRIPTION. 



Sp. Cu. About the size and form of the Duck Hawk but generally paler. Top of head, grayish brown 

 streaked with dusky, outer webs of tail feathers without distinct spots, and the primaries are without a trace 

 of spots. Under parts and collar on back of neck, pure white, with the flanks heavily spotted with dusky, 

 and the under tail coverts are more sparingly spotted with the same. Young, grayish brown, with the feath- 

 ers margined with pale rusty. Pale buflf below. 



OBSERVATIONS. 

 Distinguished at once by the pale colors above and white or whitish lower parts. Resident in Western 

 North America, straggling east to Illinois. 



DIMENSIONS. 



Length, 17.00 to 18.50 ; stretch, 39.,o0 to 43.00 : wing, 1 2.00 to 13..50 ; tail, 7.25 to 8.20 ; bill, .70 to .85 ; 

 tarsus, 2.00 to 2.10. 



DESCRIPTION OF NESTS AND EGGS. 



Nests, usually placed on rocky cliflfs or occasionally in trees, composed of stalks lined with grasses. 

 Eggs, four or five in number, spherical or rounded oval in form, grayish white in color, profusely spotted and 

 bl otched with reddish brown. Dimensions 2.0-3 by 1.70 to 2.12 by 1.80. 



FALCO RICHARDSONII. 



Ril'hardi=on's Merlin. 

 DESCRIPTION. 

 Sp. Ch. Size, form and general coloration of the Pigeon Hawk but differs in having six light bands 

 (not four or less ) on the middle tail feathers, and in the outer webs of primaries being spotted very dis- 

 tinctly with grayish in the male, and buify in the female, and the general plumage is paler. Occurs from 

 the Mississippi River to the Pacific. Eggs scarcely distinguished from those of the Pigeon Hawk. 



SYRNUIM NEBULOSUM ALLENI. 

 Florida Barred Owl. 

 DESCRIPTION. 

 Sub. Sp. Ch. General color and form (juite similar to that of the Northern Barred Owl but smaller 

 and darker with wider markings and a general reddish tingeing. The chief difference is that the toes of 

 the Florida bird are nearly naked, being occasionally, however, slightly feathered. The average size is a 

 little smaller. An abundant Florida form is occurring all over this state. 



BUBO VIRGINIANUS ARCTICUS. 

 Arctic Horned Owl. 



DESCRIPTION. 



Sp. Ch. Size and form of the Great Horned Owl but creamy ; often nearly white throughout. This 

 beautiful form occurs in the far north, inigratin^f southward in winter, probably to Massachusetts, 



BUBO VIRGINIANUS SATURATUS. 

 DrsKV Horned Owl. 

 DESCRIPTION. 

 Sub Sp. Ch. Form and size of the Great Horned Owl, but much darker, all the dark markings becom- 

 ing widened and in miny cases fused together Occurs (m the northern sea b:iard of bjth American coasts, 

 on the east from Labrador northward, migrating southward quite to Massachusetts or south of this point. 

 A specimen was brought to me in November, 18 M, which was killed in Waltham, Massachusetts. Mr. 



