bZb Nichols, Limicoline Voices. [oct. 



members of a flock, the flight-note is used most emphatically by 

 singles that have become separated from their companions or are 

 in active flight and disposed for companionship. On being flushed, 

 the bird is signalling to possible companions, but as it has been 

 feeding singly, concealed from such others as there may be, by 

 the grass, their distance is uncertain. 



White-rumped Sandpiper (Pisobia fuscicollis). The flight- 

 note is a squeaky mouse-like "jeet," quite unlike any other Shore 

 Bird note. This seems to be its only call in southward migration. 



Least Sandpiper (Pisobia minutilla). The identification flight- 

 note of this species is a loud diagnostic "kreep." It is occasion- 

 ally varied to resemble somewhat the "weet" of the Spotted Sand- 

 piper, or the flight-note of the Ring-neck, though it is neither 

 whistled nor melodious. It is seldom used on the ground, but on 

 August 9, 1919, at Mastic, I made an observation on its use by an 

 alighted bird to call in another individual from the air. About 

 four Kriekers, a couple of Solitary Sandpipers, and about five 

 Least Sandpipers were alighted on a bit of dead meadow. One 

 of the latter called repeatedly, a very fine high clear "kreep,'' 

 apparently corresponding with a faint husky "kreep" from another 

 somewhere in the distance, presumably a bird which presently 

 appeared hovering and dropping down to alight with the others. 



In flushing, a Least Sandpiper sometimes utters a string of short 

 unloud notes with or without the ee sound, " quee-quee-quee-que, " 

 or "queque, " to be followed almost immediately by a variation of 

 the flight call, as it gets more fully underway. 



The fligbt-note varies down to "che" and "cher, " not readily, 

 if at all, distinguishable from similar calls of the Semipalmated 

 Sandpiper. 



When a flock are up and wheeling about a feeding spot to alight 

 there again almost at once, they have sometimes a confiding little 

 note "chu chu chu chu," etc., with variations, which has also 

 been heard from the first bird of a flock to alight, when already 

 on the ground. This is suggestive of the "yu yu" note of the 

 Lesser Yellow-legs, analogous with notes No. (6) or (7) of that 

 species. 



