BufFel-headed Duck 
III 
small flocks than in pairs or threes. The males chase each other a good deal on the water, with low 
chuckling croaks, the chase usually ending in the * display ' flight of one of the males. 
" The Buflle-head winters in large numbers on the coast of B.C. In the interior it is scarcer at this 
season, though a few remain on the larger lakes that do not freeze. In February their numbers are 
augmented, and by March they are very common, adult males predominating, as is the case with nearly 
all ducks in the northern portion of their range at this season. 
The species nests sparingly on the small ponds and lakelets in the neighbourhood of Okanagan 
Lake, south 49th parallel. The only nesting record I have for the southern coast district is one for Sumas 
Lake, where I once saw a female with two half-grown young." 
