GREEN WOODPECKER. 



147 



Adult females have less red upon the head, and no red 

 on the black mustache. 



In young birds that have recently quitted the nest, the 

 scarlet colour on the top of the head is mixed with yellow 

 and greyish black, the feathers passing by a change of 

 colour from greyish white to yellow, and afterwards to 

 scarlet ; on the mustache of the young male the same 

 changes may be observed ; on the back and wings the 

 green feathers are tipped with yellow : all the under surface 

 of the neck and body dull greyish white tinged with ash 

 green, streaked longitudinally on the neck, and trans- 

 versely on the breast and belly, with greyish black. The 

 green colour on the under surface of the body increases 

 with age. 



The vignette below represents the breast-bone of the 

 Green Woodpecker, rather larger than the natural size; 

 the power of flight may be estimated by comparing this 

 bone with that of a Falcon, vol. i. p. 113, and that of 

 an Owl, at p. 137, or with that of the Jackdaw, in the pre- 

 sent volume, p. 108, between which bird and the Green 

 Woodpecker there is no great difference in size. 



