.Umbagog 
Clanffula ameri cana 
1890 . 
Oct,25, 
Two adults o o and two ? ? in Erroll Hill pond, one of the 
drakes apparently in perfect plumage, the other with head brownish. 
The came close in shore & made short dives. One called krtick 
very like a Saiif*© * They dove rather splasftily like a musk rat. 
The drakes kept out of shot,off shore. One dove most of the time 
for an hour, the other buried head amongst scapulars and slept for 
15 to 20 minutes at a time floating in one place turning around in- 
p- l - ac -g at rate of about one turn per minute. I think the light 
air acted on his tail which was slightly raised, 
rose . „ 
Twice one of the drakes^on end & flapped his wings a few times 
each stroke producing thehumming top sound as loudly & distinctly 
as if the bird wore flying. One of the also flapped her wings 
in a similar manner but made only a slight rustling noise. Is not 
the humming top sound made only by the adult males? I can think 
of 
several reasons for, t r hinking it to be so. 
A. 
It would explain 
why we hear it here so seldom & on the seacoast in winter so 
often. 
