239. =Pectoral sandpiper.= TRINGA MACULTA. Common migrant; occurs from the plains to the great height of 13,000 feet. 240. =White-rumped sandpiper.= TRINGA FUSCICOLLIS. Not uncommon migrant; a bird of the plains, its western limit being the base of the Rockies; breeds in the far North. 241. =Baird's sandpiper.= TRINGA BAIRDII. Abundant migrant; breeds far north; returns in August and ranges over mountains sometimes at height of 13,000 to 14,000 feet, feeding on grasshoppers. 242. =Least sandpiper.= TRINGA MINUTILLA. Common migrant; found from plains to 7,000 feet. 243a. =Red-backed sandpiper.= TRINGA ALPINA PACIFICA. Rare migrant; only three records; range, throughout North America. 246. =Semipalmated sandpiper.= EREUNETES PUSILLUS. Common migrant; from the plains to 8,000 feet. 247. =Western sandpiper.= EREUNETES OCCIDENTALIS. Rare migrant; breeds in the remote North; western species, but in migration occurs regularly along the Atlantic coast. 248. =Sanderling.= CALIDRIS ARENARIA. Rare migrant, on plains; range nearly cosmopolitan; breeds only in northern part of northern hemisphere. 249. =Marbled godwit.= LIMOSA FEDOA. Migrant; not common; a bird of the plains, but seldom seen; occasionally found in the mountains. 254. =Greater yellow-legs.= TOTANUS MELANOLEUCUS. Common migrant; in favorable localities below 8,000 feet. 255. =Yellow-legs.= TOTANUS FLAVIPES. Common migrant; distribution same as preceding. 256. =Solitary sandpiper.= HELODROMAS SOLITARIUS. Summer resident; not common; in migration, common; breeds from plains to 10,000 feet. 258a. =Western willet.= SYMPHEMIA SEMIPALMATA INORNATA. Summer resident; not common; common migrant, especially in the fall; breeds from plains to 7,000 feet. 261. =Bartramian sandpiper.= BARTRAMIA LONGICAUDA. Common summer resident; abundant in migration; a bird of the plains; rare west of mountains. 263. =Spotted sandpiper.= ACTITIS MACULARIA. Abundant summer resident; breeds on the plains and at all intermediate altitudes to 12,000 feet, even on top of mountains of that height, if a lake or pond can be found; in fall, ranges above timber-line to 14,000 feet; some may remain throughout winter. 264. =Long-billed curlew.= NUMENIUS LONGIROSTRIS. Common summer resident; breeds on the plains; also in Middle and South Parks; found on both sides of the range. 265. =Hudsonian curlew.= NUMENIUS HUDSONICUS. Rare migrant; all records thus far from the plains; general range, North America. 270. =Black-bellied plover.= SQUATAROLA SQUATAROLA. Migrant, not common; bird of plains below 5,000 feet; breeds far north. 272. =American golden plover.= CHARADRIUS DOMINICUS. Migrant, not common; same record as preceding. 273. =Killdeer.= ÆGIALITIS VOCIFERA. Abundant summer resident; arrives early in spring; breeds most abundantly on plains and at base of foothills, but is far from rare at an altitude of 10,000 feet.