OF 8ELB0BNE. 
notes, and that constantly, than those two that I am 
acquainted with; for the one has a joyous, easy laughing 
note; the other a harsh loud chirp. The former is every way 
larger, and three-quarters of an inch longer, and weighs two 
drams and a half ; while the latter weighs but two ; so the 
songster is one-fifth heavier than the chirper. The chirper 
(being the first summer-bird of passage that is heard, the 
comparatively the longest wings, the latter when closed covering three- 
fourths of the tail, and the longest legs. In the wing the second 
primary is nearly equal in length to the fourth as shown in the cut 
opposite, while the third and fourth have their outer webs sloped off 
towards the extremity (this peculiarity seems to have been inadvertently 
overlooked by the artist). In colour it is much greener above, and 
of a purer white beneath than either of its congeners. The legs are 
flesh-coloured. The Willow wren {Ph. trochilus) measures in length 
as nearly as posisible 5 inches, wing 2°6 and tarsus 07. The wing is thus 
comparatively shorter, the second primary being equal to the sixth, 
and the third, fourth and fifth with their outer webs sloped off towards 
the extremity. 
QUILL-rEATIIERS OF THE WILLOW WREN. 
In colour it is the yellowest of the three species, and this is parti- 
cularly observable in young birds in the pkuuage of their first autumn. 
The legs are flesh-coloured. 
The Chiff'-chaff* {Ph. rvfd) is the smallest of the three, measuring in 
length about 4*7 inches, wing 2*4, and tarsus 0'6. The wing is re- 
QTJ ILL- FEATHERS OF THE CHIFF-CHAFF. 
markably short, the second primary beinof about equal to or no longer 
than the seventh, and the third, fourth, fifth, and sixth have their outer 
webs sloped off* towards the extremity. 
In regard to colour, greenish brown is the prevailing tint above, 
white tinged with yellow beneath. The legs are hair brown. — Ed. 
