FALCO PEREGRINUS : DUCK HAWK. 1 1 1 



gytfalco" of Allen, Bull. Essex Inst, x, 1878, p. 21, No. 

 164, belong here or to the next form .?) 



F. gyrfalco islandicus. Rhode Island, one specimen, 

 near Providence, winter of i864-'s : Allen, Am. Nat, 

 iii, 1 869, p. 513; this specimen, given by Allen as F. 

 sacer, has since been identiiied with islandicus; see 

 Hist. N. A. Birds, iii, 1874, pp. 114, 115. 



Here may belong also the following records : F. 

 islandicus, Putnam, Pr. Essex Inst., i, 1856, p. 226, 

 Seekonk Plains, Mass. (same record as quoted by Allen, 

 Pr. Essex Inst, iv, 1864, p. 81, under name of F. candicans, 

 and in part the same as quoted by Coues, Pr. Essex 

 Inst., v, 1868, p. 254, under name of F. sacer). F. candi- 

 cans, WerriW, Pr. Essex Inst., iii, 1862, p. 139; "not un- 

 common " at Norway, Me. F. sacer, Maynard, Nat. 

 Guide, 1870, p. 134, and Pr. Bost. Soc. Nat. Hist., 

 xiv, 1872, p. 382. Hierofalco gyrfalco islandicus, Brown, 

 Pr. Portland Soc. Nat. Hist., Apr. 1882; Portland, Me. 



DUCK HAWK: PEREGRINE FALCON. 



Falco PEREGRINUS Tunstall. 



Chars. Tarsus feathered but a little way above in front, not longer 

 than middle toe. First quill not shorter than third; second 

 longest ; first alone decidedly emarginate on inner web. 

 Nostril with a central tubercle; bill toothed as in all the true 

 Falcons. Length about 18 inches; wing, 13.00-14.00 ; tail, 7.00- 

 8.00. Above, blackish-ash, with more or less evident pale edg- 

 ing of the feathers. Forehead and under parts white with more 

 or less fulvous tinge, and blackish transverse bars ; conspicuous 

 black cheek patches. Young with the upper parts browner, the 

 tawny shade below stronger, the under part.s striped lengthwise. 



