Brewster on a Petrel new to North America. 91 



perhaps three, broods in a season. June 26 I found large young out of 

 the nest; July 25 I obtained a nest with three eggs; and on September 

 25 I heard young birds crving for food. They are our commonest summer 

 bird, taking the place around the door of the Chippy in the East. The 

 breasts of the nestlings are spotted, but they soon show traces of the 

 chestnut dorsal patch. A curious prolonged, grating tsip is the only note 

 of the young birds. They leave just as oregonus becomes plentiful — No- 

 vember 1. There is a great difference between the eggs of the nest spoken 

 of above and those of a clutch taken in June in New Mexico. Both nests 

 are the ordinary ••Ground Sparrow" affair. The ground color is the same 

 in all the eggs, i.e. a bluish-white, but while the New Mexico eggs are very 

 faintly dotted with brown — scarcely noticeable — the Colorado eggs are 

 everywhere dotted with reddish spots, tending to form a wreath around 

 the larger end. I would hesitate to believe the two clutches to be of 

 caniceps had I not shot the birds. 



41. Spizella moiitana, Ridg. Tree Sparrow. — A rare migratory 

 visitant in spring and fall. 



42. Spizella socialis. Bp. Chipping Sparrow. — Rare; not nearly 

 as common as the following. 



43. Spizella socialis arizonae. Cones. Arizona Chipping Sparrow. 

 — Common; breeds. 



[ To be concluded^ 



CRITICAL NOTES ON A PETREL NEW TO NORTH 



AMERICA. 



BY WILLIAM BREWSTER. 



Some months since, while passing the natural history store of 

 W. J. Knowlton, Tremont St., Boston, my attention was attracted 

 by a mounted Petrel, which, with spread wings, hung conspic- 

 uously displayed in the window. I saw at once that it was a 

 species new to me and, upon entering, was greatly astonished to 

 learn that it had been received only a short time before in the 

 JJesJi, and in a comparatively fresh condition. Further inquiries 

 elicited the information that it had been mounted for Mr. E. II. 

 Woodman of Concord, N. II.. and upon writing to that gentle- 

 man. I was very kindly put in possession of the following partic- 

 ulars. The bird had been sent him by a client, Mr. Nathan F. 

 Smith, who conducts a large farm at Mt. Morris, Livingston Co., 



