( Ci ci^t cx 'ixj / iK ' (j~ 4 
394 
Dusky slate or grayish 
brown, inner tertials 
lightly edged with white. 
General Notes. 
Wings. 
Fuscous, tertials faint- 
ly edged with whitish. 
f Auk 
LOct. 
Grayish brown faintly 
iridescent, the coverts 
slightly, tertials more 
widely, margined with 
huffy or ochraceous. 
r It is of course well known that in the Tree Swallow both birds 
of the year and adults moult before leaving us for the South while 
the Cliff Swallow migrates before moulting. It is consequently 
of interest to observe that in this hybrid moult has begun normally 
with the innermost primaries. 
This fact is also of importance in determining the bird’s age and, 
in connection with the unworn condition of the wing-feathers, it 
leaves no doubt that the specimen is in post-natal plumage. 
The radical differences in the character of the nests of the sup- 
posed parents of this bird lead one to speculate on the type of 
nest-structure in which it was reared, but, unfortunately, our curi- 
osity in this direction cannot be gratified. 
Auk, XIX, Oct., 1902, p p- , 
25 
