70 



NORTHERN ZOOLOGY. 



BUTEO (CIRCUS) CYANEUS.* 

 Specimen No. 2. Female. (Vide p. 62.) 



In this mature female Hen-Harrier the bill is more compressed and flattened on the sides, 

 particularly posteriorly, than in any of those figured above, although its ridge is proportionably 

 more rounded. The cere covers a greater portion of the ridge than in the preceding; but its 

 anterior margin curves back beneath the nostrils, and runs nearly to the angle of the mouth, 

 before it is lost on the cutting margin of the mandible. The depth of the upper mandible at 

 the nostrils is about equal to that of the Common Buzzard ; and there is a small, but distinct 

 lobe on the margin of the mandible a little anterior to the nostrils. The nostrils, oval and 

 longitudinal, open obliquely forwards, extend close to the margin of the cere, and are nearly 

 concealed by the black hairs which spring from the lores. The lower mandible is rounded at 

 its tip, and its margins are more incurved than in the preceding Falcons. 



BUTEO (CIRCUS) CYANEUS. 

 Specimen No. 8. Young female. (Vide p. 64.) 



The bill of this specimen is destitute of a lobe on the cutting margin of the upper mandible. 

 (Vide pp. 58 and 59.) 



* Since the preceding pages were sent to the press, I have had an opportunity, through the kindness of Mr. Yarrell, 

 of comparing the eggs of the English Hen-Harrier with those taken from the nest of the Harrier on the plains of the 

 Saskatchewan, as mentioned in p. 55. The latter, which measure exactly 1*81 inch, in length, are two-tenths of an 

 inch longer than the English ones. 



