GEOLOGICAL SURVEY OF THE TERRITORIES. 



675 



foot of the Walisatch Range, near Ogden. It is a peculiar bird, and like 

 our eastern species, {Icteria virens,) is always heard, but seldom seen. 

 They are shy, suspicious creatures, and although, when disturbed, they 

 flit about in a scolding, angry manner, they generally manage to keep 

 out of sight. You hear them in the bushes, imitating the mewing of a 

 cat, the shrill notes of the jay, sometimes singing like a cat-bird, and 

 yet, again, they sing sweetly in their own peculiar manner. They have 

 a strange habit of elevating themselves in the air to the height of thirty 

 or forty feet, then, poising themselves for a moment, they descend again 

 to the bushes ; during their descent they jerk themselves about in the 

 air, at the same time uttering clear, ejaculated notes, which can be heard 

 for quite a distance, and are not altogether unpleasant to the ear. I 

 found the nest of this bird on the 15th of June ; it was on a scrub-oak 

 near a small stream ; was about four feet above the ground, and con- 

 tained three young birds and one egg. The egg resembled, in size and 

 color, that of our eastern species, (J. virens.) 



Dench'oica auduhonii, Baird, (Audub(m's warbler:) 



Hah. — Pacific coast of United States to central liocky Mountains, 

 south to Mexico. 



Andubon's warbler, though similar in most respects to our eastern yel- 

 low-rump warbler, fl). coronataj is easily distinguisbed from it by hav- 

 ing the chin and throat yelloiv instead of white. During the latter part 

 of September I saw several flocks of tbese birds on Snake River ; they 

 appeared to be on their way south. 



Dendroica cestiva, Baird, (yellow warbler :) 



Hah. — United States from Atlautic to Pacific ; south to Guatemala 

 and West Indies. 



Yellow warblers were common at Ogden, as they were at all places 

 where there was a stream of water whose banks were lined with bushes. 

 I found the nest of this bird at Ogden — No. 24, (10294;) it was on a wil- 

 low, about three feet above the ground, and contained four fresh eggs. 



Myiodioctes p^isillns, Bonap., (green black-cap warbler :) 



Hah. — United States from Atlantic to Pacific ; south to Guatemala. 



