OF THE UPPER MISSOURI. 169 
PIrPILo CHLORURA, Baird. 
GREEN-TAILED Fincw. Baird, General Report on Birds, p. 519. 
This species must be quite rare in the Western plains. We observed it in but one lo- 
cality, Laramie peak, where we obtained three specimens. It is also peculiar to the West. 
DoLicHoNYX ORYZIVORUS, Sw. 
Bosottnk ; REED Brrp. Baird, General Report on Birds, p. 532. 
One of the most abundant birds on the Western prairies. It is very common at Fort 
Pierre, though I have never observed it high up toward the sources of the Missouri. 
MoLoTHRus PECORIS, Sw. 
Cow Birp. Baird, General Report on Birds, p. 524. 
Abundant everywhere throughout the Northwest, visiting our herds of mules and horses, 
when in camp, by thousands. 
AGELAIUS PHOENICEUS, Vieill. 
RED-WINGED BuackBiRD. Baird, General Report on Birds, p. 526. 
Like the preceding bird this species is common throughout the Northwest. Nine speci- 
mens are included in our Nebraska collection, from different localities. 
XANTHOCEPHALUS ICTEROCEPHALUS. 
YELLOW-HEADED BLACKBIRD. Baird, General Report on Birds, p. 531. 
This species seems to be for the most part a Western bird. It is quite common through- 
out the Northwest, being found about the marshy lakes on the prairies. 
STURNELLA MAGNA, Sw. 
Meapow Lark. Baird, General Report on Birds, p. 535. 
I suspect this species does not go above latitude 43° on the Missouri, but is there re- 
placed by an allied species, S. neglecta. ‘The only specimens we have seen, were obtained 
on the Loup fork of the Platte, during the summer of 1857. 
STURNELLA NEGLECTA, Aud. 
WEsTERN Lark. Baird, General Report on Birds, p. 537. 
This is one of the most abundant birds on the broad prairie country of the Northwest. 
It appears early in the spring, and remains late in the fall, greeting the eye of the travel- 
ler by its presence, and charming him with its song. It occurs very abundantly in the 
sage plains, where it finds its choicest places for building its nest and rearing its young. 
‘Twenty-two specimens were obtained by our party. 
IcTERUS SPURIUS, Bonap. 
OrcHaRD Oriote. Baird, General Report on Birds, p. 547. 
Very abundant throughout the Northwest, especially along the wooded bottoms of the 
VoL. XII.—22 
