I4 COLD AND WARM WEATHER BIRDS. 
nesting grounds are near edges of lakes, sloughs, mus- 
quaids, rushbeds and on the islands and mainlands of 
the far north; they nest from 50° north to the most 
northern islands of North America. Their clutch is 
from eight to ten, of a white greenish color. It is, 
practically, a prairie bird; although it may and does 
inhabit ponds, lakes and bayous surrounded by tim- 
ber, it does not frequent the mast covered glades or 
oak-openings like the red-leg mallard, nor does it mix 
to any extent with them; furthermore, should one or 
two become mixed in a flock with them, they can read- 
ily be detected. 
Its food consists of many varieties, which may be 
found in a chart I have appended to save repetition, 
as many of the non-divers eagerly seek the same food. 
All measurements are taken from drakes, the ducks 
ranging smaller: Length 23.50; wing 10.75; tarsus 
1.60; extent 36.00; middle toe 2.00. 
Genus Dajila. 
Dajfila Acuta—PINTAIL, SPRIGTAIL.—Habitat.—Com- 
monly distributed through the United States, es- 
pecially between the Alleghany and Rocky Mountains 
to Alaska, British America and beyond. 
The spring migration above the frost line com- 
mences with the first breaking up of winter; the ducks 
iollow the open pools of water to be found in sloughs, 
iakes and rivers, and with the yellow-leg mallard are 
the first of the non-divers to start for their northern 
nesting grounds. They arrive in three distinct issues, 
the first leaving, in bulk, at least, before the second 
arrives; these stay about a week before they proceed 
