hA.«i ' m fu* 
f 
fyt&A't • I kL&iiJWH j 
<L^ IT. U . fjjj 
6 J i. 
ujZLlj ^tAf4vwlf( , <(& '^/ ^r , ^K*. /v^yf *-» ''■*-' 
(hx^j'lL , Z\Ul ihsa^.,v*-^ <Lk.*A-Lj u«, ^ru»v 
^vOT 6v ^t ^ /^, 
g~a^y 
fcvv^. 
■ / ^vO"vvs.a-^*‘-^- ■^•'8 n/'i»*». uj 
fcvv .‘Y ,/’’S~..-j !A.'->-.-cl. ^IA^4. '-^ v, iv^-wv^v-N 
*“^r< , «j(u^a. 
/wv 
k 
‘H-ji 
]/'$%%, 
^1 
*-*A MA £*r 
IHj : 
A 
'Mj*Z C</ 
- - — c^.«< -~'- 
^'i-v-t A /v>u>^vth«t/. IU ^ 
The Singing of Birds, E. P. Bicknell. 
Spizella pusilla. Field Sparrow. 
This Sparrow also arrives in song, except, as with other birds,- 
in the case of individuals of premature advent. Singing con- 
tinues with some yearly regularity until the middle of August, at 
which time, or even a little before, it may cease ; or the time of 
cessation may be delayed a week or ten days. Latest dates for 
singing are August 29 and 31. I have noticed no indication of 
singing in the autumn. 
In several instances I have known the songs of early spring 
arrivals to be so aberrant as scarcely to be recognizable, and have 
noted similar but lesser variation in the songs of later comers. 
There is also considerable individual variation in the song, the 
normal song being sometimes prolonged into elaborate varia- 
tions. Mr. J. A. Allen has written of this species, as ob- 
served in Florida (Bull. Mus. Comp. Zool., Vol. II, No. 3, 
p. 279), that “The songs of the males were so different from 
those of the northern bird that the species was almost unrecog- 
nizable by me from its notes.” As illustrating further geo- 
graphical variation in voice of this species, I may quote from a 
letter from Mr. Fred. T. Jencks of Providence, that “The Field 
Sparrow in Illinois usually twice repeats the song he gives in 
the East.” Atlk, 2 , April, 1886 . p. /t/D~/tyG>- 
