MORGAN — Notes on the Food and Temperatures of Cormorants. 77 



From the material examined Capt. White and. 

 myself have been able to make out the colour 

 changes of the bill and bare skin of the face in the 

 full grown birds of this species. The colours of the soft parts 

 of the nestling have so far as I know, not yet been recorded, 

 neither is it known whether the birds breed before attaining 

 their full nuptial dress, nor if they lose the colours after the 

 breeding season. 



First stage: — The bill, face, and gular pouch are of a uni- 

 form dull light yellow. Birds in this stage are undoubtedly 

 immature, though full grown, as the measurements show. 



Second stage: — The orange spot in front of the eye 

 appears, and the ridge of the bill becomes light horn colour. 



Third stage : — The blue over the eye appears, the culmen 

 and gular pouch are darker. 



Fourth stage: — The green under the eye appears, the 

 gular pouch and ridge of the bill are much darker. 



Fifth Stage: — The gular pouch and proximal portion of 

 the ramus of the lower jaw become deep purple, and the bill 

 nearly black. This is apparently the full breeding plumage, 

 for most of the birds in this condition showed signs of breed- 

 ing, on dissection. They did not, however, all show them, sol 

 this point still remains uncertain. 



The colours do not differ in the sexes. 



Five speciments of the little pied cormorant were secured. 

 Their temperatures were: — 



1 105.2 D. 4 106.0 D. 



2 107.0 D. 5 105.4 D. 



3 107.0 A. 



Measurements in cm., and weight in lbs. 





fed 



•S-a 



*8 



3 



1 







. . 58.75 



87.25 



41.75 



23.75 



3.80 



3.80 



n. 



s 



. . 58.25 



87.25 



40.50 



24.25 



3.80 



3.80 



i 



$ 



. . 57.00 



89.25 



40.00 



22.75 



3.30 



3.30 



i 



9 



. . 57.00 



88.00 



39.50 



24.00 



2.80 



3.80 



i* 



S 



. . 62.00 



97.50 



44.25 



25.50 



3.50 



4.50 



ii 



$ 



