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The Singing of Birds. B.P.Bicknell. 
Passerculus sandvicensis savana. 
Savanna Sparrow. 
. ThlS Spa 7° W is one of the few s Pnng migrants which are not 
in song on their arrival, and is also the only one of our song-birds 
winch I find in full moult while migrating in the spring. Even 
so late as the fourth week of April individuals are to be found 
covered with sprouting and growing feathers ; but at the same 
time, and before, others have acquired their full spring attire. 
I he dates that I have recorded limiting its presence in the 
spring are March 23 and May 19 ; while I have heard its song 
between April 9 and May 2. Beyond the latter date it is never 
common, and in some seasons there are but few birds remaining 
at the end of April. Singing does not usually begin until from 
two to three weeks after the pioneer migrants have made their 
appearance. 
this Sparrow I have never heard sing in the autumn. 
Auk, I, Oct., 1884. p. 3Z*f~ 330 . 
