Wings 



339 



drawn up, and the ostrich would scratch its body or head 

 with this interesting finger rehc ! When the plume feathers 

 of the wing are full grown, the foot or leg is thus used, 



Fig. 269. — Wing of Ostrich, showing reptile-like claws. 



the head or neck being rubbed against its roughened 

 scales. 



The Great Auk — a sea-bird which has become extmct 

 within the last sixty years — was without the power of 

 flight, and its living allies, the Razor-billed Auks and 

 Murrelets, have very small wings and are rather weak 



