.50 



APPENDIX. 



deemed sufficient to identify those of greatest interest. Owing to the 

 completeness and accessibility of our ornithological literature, little 

 comment seems necessary beyond the bare references aforesaid. By 

 these it is hoped the critical reader may obtain some introduction to the 

 necessary authors without our unduly encumbering this Appendix with 

 details. 



Page 324. 

 "Common Crow." 



To these pertinent remarks on the relations of Crows to agriculture 

 etc. the scientist of to-day can add but little, either of information or 

 advice. Both the Crow and House Sparrow have demonstrated the di- 

 vine right and ability to solve their own destiny without the advice of 

 the United States government or of State legislatures. For discussion 

 of Crow Roosts and Roosting Crows, see my paper in the American Nat- 

 .uralist, 1886, pp. 691 & 777. 



Page 326. 

 "Purple Grackle." 



Ord's (Wilson's) humane verdict on the economic status of our Black- 

 birds standsthe test of modern investigations in this important branch of 

 ornithology. 



Pages 327, 328. 



"Downy Woodpecker." 



While the general usefulness of our Sapsuckers is undeniable, it is a 

 fact that some of them, especially the Yellow-bellied Woodpecker, do 

 tap the healthy trees for the sap and that the insects thus attracted are 

 incidentally devoured as well as the sap itself. See paper by the late 

 Mr. Bolles, Auk, 1891, p. 270. Also Dr. Coues in Birds of the North- 

 west, and Proceedings of the Philadelphia Academy for 1866. 



Page 329. 

 "Humming Bird." 



Nineteen species of the Trochilidce have been recorded in the United 

 States. 



Page 337. 



"Wild Pigeon." 



"The Present Status of the Wild Pigeon," (etc) is made the subject of 

 a paper by Mr. Wm. Brewster in the Auk for October, 1889. The extinc- 

 tion of this bird over the greater part of its former habitat has been 

 accomplished. Those remaining have "retreated to uninhabited regions, 

 perhaps north of the Great Lakes in British North America." Mr. 

 -Brewster concludes "it is probable that enough Pigeons are left to re- 



