CHECK-LIST OF COLORADO BIRDS 317 



species, but in migration occurs regularly along the Atlan- 

 tic 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 ; occasion- 

 ally found in the mountains. 



254. Greater yellow-legs. Totanus melanoleucus. 

 Common migrant ; in favorable localities below 8,000 

 feet. 



255. Yellow-legs. Totaxus flavipes. Common mi- 

 grant ; distribution same as preceding. 



256. Solitary sandpiper. Helodromas solitarius. 

 Summer resident ; not common ; in migration, common ; 

 breeds from plains to 1 0,000 feet. 



258a. Western willet. Svmphemia semipalmata inor- 

 NATA. Summer resident ; not common ; common mi- 

 grant, 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. Abun- 

 dant 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 1 4,000 feet ; some may 

 remain throughout winter. 



264. Long-billed curlew. Numenius longirostris. 

 Common summer resident ; breeds on the plains ; also in 



