I_JI BlCKNELL on tin Singing of Birds. [April 



So Recurvirostra americana Gm. 



Si. Rallus virginianus L. But once observed — May 20 — in a marsh 

 near town. 



Sj. Grus canadensis (L.). One recently shot was seen in market in 

 South Pueblo. 



53. Anas boschas /.. Abundant in April and September on the 

 river. 



54. Chaulelasmus streperus (L.). One was shot out of a flock of five 

 on May 15. 



55. Querquedula discors (£•)• Common in May and September on 

 the river. 



86. Querquedula cyanoptera (V.). Not uncommon in May on the 

 river. 



87. Nettion carolinensis ( Gm.). Common on the river in April and 

 September. 



SS. Erismatura rubida ( Wils.). A male, the only one seen, was shot 

 on a pond May 1 1. 



89. Lophodytes cucullatus (L.). Alderman Morse of Pueblo informs 

 me that he shot one on the river here several years ago. 



90. Mergus merganser americanus (Cuss.). Common in April on the 

 river. 



91. Pelecanus erythrorhynchus Gm. Mr. Bagley of Rye, Pueblo Co., 

 Col., has a bill of one in his possession which he shot on a large artificial 

 lake near Pueblo in 1SS0. 



A STUDY OF THE SINGING OF OUR BIRDS. 



BY EUGENE P. BlCKNELL. 



tUnued from 1 \>/. /, /. 332. ) 



Spizella monticola. Tree Sparrow. 



This hardy Sparrow, though provided through our winters 

 with an unfailing- supply of seeds from the catkins of swamp alders 

 and the dried flower-clusters of golden-rods and other withered 

 weeds which reach above the snow,* seems nevertheless 



* The number of wild plants and trees that keep their seed through the winter is 

 greater than the casual observer would be likely to believe. During a recent winter 

 I gave some attention to this subject, noting down all the trees and plants found with 

 seed. No systematic or extended search was made, yet a few midwinter walks gave 

 me a list of about one hundred and fifty names. Some of these were of scarce plants, 

 or those the fruit of which was hardly adapted for a bird's food, but many were of 

 common and widely-spread species, which were well suited to form winter staples for 

 our granivorous birds. 



