118 Birds of Colorado 



been seen at Fort Lyon, May Ist (Thome), near Pueblo, May 17th 

 (Beckham), in El Paso co., ]\Iay 1st (Allen & Brewster), at Horse 

 Creek, May 17th (Aiken coll.), and at Loveland, May 6th (W. G. Smith). 

 I have not heard of any fall records though it doubtless returns 

 south through the State. 



Western Sandpiper. Ereunetes mauri. 



A.O.U. Checklist no 247.— Colorado Record— Cooke 97, p. 66 

 {E. occidentalis). 



Description. — Closely resembKng E. pusillue but with a much longer 

 bill, averaging -88 in the male and 1-05 in the female, against -72 

 and -84 respectively. 



Distribution, — Breeding chiefly in western Arctic America ; south 

 on migration mostly in the west but also on the Atlantic coast, in winter 

 to Central and South America. 



In Colorado this Sandpiper is of rare occurrence on migration. 

 Cooke gives only three records : Loveland, May 12th and July 4th 

 (Osburn), and near Pueblo in the fall (Lowe). 



Genus CALIDRIS. 



Bill moderate, about equal to the tarsus ; resembling Pisobia 

 in other respects, but with no hind toe ; anterior toes cleft to the base, 

 without webs. 



The genus contains only the SanderHng, a cosmopolitan species. 



Sanderling. Calidris leucophcea. 



A.O.U. Checklist no 248— Colorado Records— Cooke 94, p. 183 ; 

 {Calidris arenaria) ; H. G. Smith 96, p. 65 ; Cooke 97, pp. 66, 158 ; 

 Horsey & Rockwell 09, p. 115. 



Description. — Adult in summer — Above mottled black, white and 

 tawny-rufous ; wings with the primaries dusky, paler on the inner 

 web, and with white shafts, secondaries also with a good deal of white ; 

 rump and upper tail-coverts dusky centrally, white on the sides ; below 

 white, the throat and breast sometimes slightly spotted with dusky 

 and tawny ; iris, bill and legs black. Length 7-5 ; wing 4-8 ; tail 2-0 ; 

 cuknen -95 ; tarsus -95. 



Adults in winter have no tawny ; upper-parts ashy-grey, generally 

 with dvisky shaft-stripes and lighter edges ; under-parts pure white. 

 In any plumage the absence of tho hind toe at once distinguishes this 

 from other Sandpipers. 



Distribution. — Breeding far north ; eggs have been taken on the Arctic 

 Coast near Franklin Bay, in Mackenzie and in Greenland ; on migration 



