530 HABITS OF BELL'S GREENLET 



restricted as to exclude the Cooper record was given by Baird, 

 Brewer, and Ridgway in 1874, and at the same time I stated in 

 the " Birds of the Northwest " that this species had not been 

 observed in the Southern Kocky Mountain Begion, " where re- 

 placed by V. pusillus". It seems, however, that we were all 

 wrong about this, the fact being that V. belli does inhabit Ari- 

 zona, whether the birds observed by Cooper were of this spe- 

 cies or the other. Such is shown to be the case by Mr. Hen- 

 shaw in the following paragraph : 



" This little Yireo appeared to be rather common along the 

 Gila River, inhabiting the dense thickets along the banks. At 

 this season, the middle of September, its quaiut song was heard 

 during most of the day, but more particularly in the hot hours 

 of noonday. In addition to the song, which somewhat resem- 

 bles the White-eyed Vireo's, it has a harsh scolding note, which 

 it often repeats as it searches among the dense undergrowth 

 for its food. But a single specimen was obtained, as it was 

 rather timid, and on hearing the slighest noise would instantly 

 cease its notes and dive into the brush. The single specimen 

 secured appears on comparison to be quite typical of the spe- 

 cies ..." 



It seems most probable, from the date at which these obser- 

 vations were made, and the glimpse given of the manners of 

 the birds, that they were migrating at the time, and it may 

 be that Bell's Vireo comes into the Colorado Valley in the fall, 

 like the true Solitary Vireo, these two species being there repre- 

 sented in the breeding season by V. pusillus and V. plumbem 

 respectively. This much, at least, may be fairly surmised from 

 what little we have learned of the movements of Bell's Vireo. 

 We know that it breeds from our southern border in Texas 

 to its limits of distribution northward, and that it occurs in 

 Mexico as far south as Tehuantepec, where Sumichrast found 

 it ; but the periods of its migrations and the full extent of its 

 winter residence still remain to be ascertained. 



The nest and eggs of BelPs Greeulet I have not taken occa- 

 sion to examine for myself, as they have been carefully described 

 by Dr. Brewer. A nest from Xeosbo Falls., Kaus., found in June 

 by Mr. B. F. Goss, is pensile, as usual, and suspended by three- 

 fourths of its brim from two small twigs. "Over these is 

 strongly bound a finely felted webbing of the flax-like fibres of 

 plants, interwoven with slender steins. With these are con- 

 nected and interwoven also the materials that make up the 



