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BIRDS OF COLORADO. 
243a. Tringa aipina pacifica. Red-backed Sandpiper. 
Migratory; rare. There are but three Colorado records for 
this species, which is found throughout North America. There 
was an adult in winter plumage in Mrs. Maxwell’s collection, 
and Win. G. Smith took it at Loveland, April 29 and May 9. 
Breeds far north. 
246. Ereunetes pusilius. Semipalmated Sandpiper. 
Migratory; not uncommon. Arrives the last of April and 
first of May. Mostly on the plains and below 7,000 feet. 
247. Ereunetes occidentalis. Western Sandpiper. 
Migratory ; rare. Should not be an uncommon species in 
Colorado, but so far has been reported but three times. Prof. 
Wm. Osburn writes that he shot one at Loveland, July 4, 1889, 
and another May 12, 1890. W. P. Lowe, of Pueblo, shot two on 
a lake near there in the fall of 1894. Wm. G. Smith took one 
at Loveland, May 9, 1890. Breeds far north. 
248. Calidris arenaria. Sanderling. 
Migratory; rare. Though occurring over most of the 
world, it is quite rare on the plains region of the United States. 
Prof. Wm. Osburn reports three captures at Loveland, Septem- 
ber 24, 1889, September 30, 1889, May 12, 1890. H. G. 
Smith saw one May 16, 1888, that had been taken a few days 
before at Sloan’s Lake, near Denver. There is a mounted spec- 
imen at the college at Fort Collins that was shot in the vicinity. 
Breeds far north. 
249. Limosa fedoa. Marbled Godwit. 
Migratory; not common. A bird of the plains not often 
seen; arrives about the first of May. Has once been taken in 
the mountains by C. E. Aiken at the San Luis Lakes, October 
I, 1874. Drew gives it as breeding on the plains, which it 
does in Nebraska, but there seems to be no record as yet of its 
nests being found in Colorado. 
254. Totanus melanoleucus. Greater Yellow-legs. 
Migratory; common. Found both spring and fall every- 
where in favorable localities below 7,000 feet. It is a little 
strange that neither the Greater nor the Lesser Yellow-Legs is 
know to breed in Colorado, since they both breed in Nebraska 
but a few miles from the northeast corner of Colorado. They 
reach northern Colorado about the first of April. 
255. Totanus flavipes. Yellow-legs. 
Migratory; common Distribution and migration the 
same as that of the Greater Yellow-Legs but iu most places not 
