1914] GrimieU: Mammals and Birds of the Colorado Vnlhij 121 



Fulica americana Gnielin 



Coot 



Noted but sparingly : Six seen on a tule pond below Ehrenberg. 

 March 25. Several noted along margins of the main river near Pilot 

 Knob, May 9 to 15 ; here they found concealment among the over- 

 hanging masses of cane trailing in the water. Two specimens taken, 

 nos. 12652, 12653. 



Pisobia minutilla (Vieillot) 



Least Sandpiper 



A ])and of eight seen February 24. and another of a dozen Febru- 

 ary 27, on the Arizona shore a mile above Mellen ; they were at the 

 margin of an overflow pond. About a dozen were found similarly on 

 the California side eight miles east of Picaeho. Two specimens, nos. 

 12654. 12655, were secured there April 20. 



Actitis macularius (Linnaeus) 



Spotted Sandpiper 



Frequently observed all along the river, on both sides, practically 

 throughout the period of our work. First seen, two individuals. Feb- 

 ruary 18, a little below Needles; last .seen, six individuals. May 9, near 

 Pilot Knob. In spite of the lateness of the last date, there wa.s no 

 evidence leading to the belief that the species breeds in the region. 

 Two specimens, nos. 12656, 12657, taken ]\Iarch 20 near Riverside 

 ]\Iountain and March 31 near Palo Verde, are in winter plumage; a 

 third, no. 12658, taken May 1, four miles below Potholes, is in full 

 sunniier jflumage. 



Oxyechus vociferus vociferus (Linnaeus) 



Killdeer 



Noted sparingly, not more than a pair at one time, but at a num- 

 ber of points and almo.st throughout the season: Above Mellen, Feb- 

 ruary 23; above Bill Williams River,'March 14; near Riverside ]Moun- 

 tain. March 17: opposite Cibola, April 1; eight miles east of Picaeho, 

 April 19 ; four miles above Potholes, April 23 : five miles above Lag- 



