THE BOOK OF MIGRATORY BIRDS 145 



The bill occupies the whole face of the bird, is very much 

 compressed, and is traversed on the madella by three, on 

 the mandible by two furrows; the colours are bluish-grey 

 and orange-red ; the sides of the mouth are furnished with 

 a corrugated orange-yellow skin. Feet and legs orange- 

 red. 



