Bird Observations 



had. They were singing constantly and I 

 find they vary the song a good deal. Some- 

 times it is shorter, and only two notes at 

 first, but it always has that upward run, 

 and that sweet whirring sound, like a lit- 

 tle wheel. It is unlike any other warbler 

 song, I think. 



May 24, 1905. Heard one sing a song 

 very like the red-start's "shree-shree- 

 shree" in form, but the voice was the soft, 

 husky, wheeling song of the cerulean. He 

 sang many times and never had the up- 

 ward run once. 



May 21, 1908. Watched one sing for 

 half an hour, song like the one of May 

 24, 1905. No upward run. This bird 

 came very near and moderately low, yet 

 the blue never looked bright, always dull 

 and greyish. I wonder if the individual 

 males differ much in brightness of color, 

 for it seems as if the dulness of some 

 birds was not only because I did not see 

 them in a good light. 



