lereteen at DSU heOeuNt. Bb UE E-Eetil N fi 
Dimensions (in inches) : Nest No. 2 Nest No. 3 
Internal diameter at rim ihaay bN.< aby As) 1.75 
(somewhat 
Internal diameter at largest part cupped)  f 1.87 
Internal depth 1.62 1.87 
External diameter 2.50 2.50 
External depth ) 2.50 2.75 
YOUNG 
The newly hatched young were of a pinkish or reddish color. Whcn 
one day old they remained entirely naked. Examination through a reading 
glass disclosed no trace of down or filament on any part of the reddish 
flesh-colored skin. The lining of the oral cavity was slightly yellowish, 
without markings. The wings were slender but relatively rather long. 
At the age of five and a half days, though the nestlings had grown 
much larger, their eyes did not appear to have opened, and they continued 
to be almost naked. A narrow blackish tract had started along the anterior 
portion of the median line of the back, adjacent to neck; edge of wing 
was thickly sprouted; and there was slight indication of sprouting on crown 
and hind head, and in the caudal tract. Nothing on rump or posterior 
portion of back. Under parts showed barely an indication of broad, extensi\e 
tracts along the sides, these showing whitish rather than blackish. At this 
age one of the nestlings demonstrated a lusty voice for so small a creature 
—a squeaking noise. 
VOICE 
The principal song of the first male was a rather long continuous 
sentence, usually declarative, ending quite emphatically, but sometimes 
ending with rising inflection as though asking a question. The form was 
somewhat on the order of a warble, but the effect was never very musical. 
The same bird had an entirely different song, with loud harsh squeaks as 
a prominent element—a performance difficult to describe, and certainly 
unique in bird music. 
The second bird, when discovered, was talking in an intense excited 
way, very rapidly and in long sentences which were alternately interrogative 
and exclamatory. The next day, in the vicinity of the empty nest, the song 
was a rapidly delivered decisive statement of about a dozen notes, the last 
two of which were uttered with falling inflection. This was accompanied 
by a rapid, nervous fluttering of wings and tail. Then days afterward, when 
it appeared that this bird had lost his mate, he was singing both his 
customary song and a squeaky gabble on two tones only. The latter was 
made up of a series of up-and-down squeaks many times repeated. He also 
uttered scolding notes, quite wrenlike in quality. 
Bird number three showed much variation in the quality and earnest- 
ness of his conversational song. He sang the series of up-and-down squeaks 
when his mate was near. On one occasion the female of this pair, after 
leaving her eggs, scolded me with a series of single notes, like chick, chick, 
chick, not very high in pitch. Another day one of the pair scolded a few 
times with wrenlike chur notes. When the nest contained young, the female 
