58 



52. Haliaeetus leucocephalus (Linn.). 



BALD EAGLP:. 



Brown; head and tail -white in adult. Length, 33-36 inches. 



Rare and accidental visitor, occasionally seen near, or 

 flying towards, the mountains by the Connecticut river. 



53. Faico rusticolus (Linn.). 



C4YRFALC0N. 



Ahove, more or less imperfectly harred with dark brown and pale ash; 

 beneath, white streaked with dusky. Length, 24 inches. 



Very rare winter visitor. One specimen taken at Northamp- 

 ton in the winter of 1879, by Mr. E. O. Damon. The speci- 

 men is now in the Science building, Springfield, and is said to be 

 subspecies gyrfalco. (Morris.) 



54. FaIco peregrinus anatum (Bonap.). 



DUCK HAWK. 



Above, dark bluish-ash; beneath creamy-white spotted or streaked with 

 blackish except on throat and upper breast; adult barred rather than 

 streaked beneath. Length, 19 inches. 



Very rare summer resident, more common in the fall. Known 

 to breed on Mt. Tom and has bred on Sugarloaf. Nest on 

 rocky ledges, sometimes of sticks and rubbish, but often the 

 eggs are laid on the bare rock. Eggs 2-4, creamy-white or 

 pale reddish, heavily marked with brown. Eggs laid in April. 

 Feeds chiefly on birds and is doubtless injurious. 



55. FaIco columbarius (Linn.). 

 PIGEON HAWK. 



Above, brown(bluish penciled with'black in full plumaged male) ;beneath, 

 white tinged with tawny, streaked with dark brown. Length, 12 inches. 



Rare and irregular visitor, probably only during the migra- 

 tions, though it has been reported in winter. 



