140 
THE WILSON BULLETIN— September, 1922 
Found in large numbers in the tulie swamps near the lakes. Eggs 
four to six, June 1. 
758. Russet-backed Trhush — Hylocichla ustulata ustulata. 
One pair on Deep Creek, in the dense willow, but hear many singing 
along the streams. 
761a. Western Robin — Planesticus migratorius propinquus. 
Very common nesting bird of the valley. Eggs four to five and found 
May 20 to June 10. 
768. Montana Bluebird — Sialia currucoides. 
Several pair observed in the valley and on the tablelands up to 
6500 elevation. 
The diversified fauna of Warner Valley makes it the ideal 
nesting home of many birds, the list observed by me containing 
102 specie, and no doubt some of the rare species were not found. 
The greatest enemy to bird life in the valley, especially to 
eggs, are the crows and magpies, as in the vicinity where these 
birds were nesting hundreds of egg shells, especially duck’s, 
were found. 
Coyotes and skunks also destroy nests and kill hundreds of 
the young birds. 
The ducks, nesting in their order of numbers are: Mallard, 
Gadwall, Cinnamon Teal, Redhead, Shoveller, Pintail, Ruddy 
and Canvasbacks. 
Other water fowl in order of abundance: Ring B. Culls, 
Forster’s Tern, Avocets, Am. Eared Greebes, Am. Bittern, Cas- 
pean Tern, Great Blue Herons, Black Tern, Pelicans and Sand 
Hill Cranes. 
These birds cover the main bird life of the great marshes 
and lakes of Warner Valley. 
