WARM-WEATHER DIVERS. 51 
arms or inlets running into the timber, covered with 
buck-brush or surrounded by it, so commonly found in 
the South. Their clutch is from eight to ten dirty white 
eggs, often blotched or streaked with yellowish brown. 
Length 18.20; wing 9.00; tarsus 1.60; extent 32.00; 
middle toe 2.30. 
Genus Aythya—Suscenvus Fuligula. 
Aythya affints —LittTLE BLUEBILL, BLACKHEAD, SCAUP, 
—Habitat.—Atlantic to Pacific coasts; rare in the inte- 
rior, except the lake region; north to British America 
and islands beyond; south to South America and West 
Indies. The migrations of this our smaller bluebill 
are, as nearly as can be ascertained, a counterpart of 
A. Marila, except it is more of a coast duck and less of 
an interior bird up to the 44° parallel. It becomes 
more abundant upon the north lakes, some years com- 
mon, others more scattered. It keeps to its own 
species, inhabits the same grounds, feeds on the same 
food, and is as fond of wild celery as Marila, being 
very destructive to the beds. It breeds outside of the 
United States and in the fall migration comes down 
late in two issues. 
Its clutch is from ten to fourteen dirty white eggs, 
with less markings, but in all other respects the his- 
tory of one is nearly a repetition of that of the other. 
Length 15.00 to 16.00; wing 7.75; tarsus 1.20; extent 
26.00; middle toe 2.10. 
GENUS Erismatura. 
Erismatura rubida—Ruppy pucK. —Habitat. — 
North America at large; south to Central America 
