Alder Flycatcher 275 



and leaves again late in September. It has been recorded from Boulder 

 CO., breeding at 5,500 feet (Gale), Limon and El Paso co. (Aiken) ; Baca 

 CO. (Warren), Salida, May 17th (Frey), Pueblo, Fort Garland, 7,900 feet, 

 and Pagosa Springs, 7,100 feet (Henshaw), and San Juan co. (Drew). 



Habits. — This little Flycatcher is chiefly to be met 

 with among the willows and alders which fringe so many 

 of the streams, both on the plains and in the lower moun- 

 tain valleys and parks ; it is shy, quick and nervous, 

 constantly flicking its tail and catching insects, and its 

 call is a sharp single " Whit." 



Dennis Gale found it breeding in the alder bushes, 

 along a stream in Boulder co. at about 5,500 feet, on 

 July 2nd ; the nest contained five eggs, one of which 

 belonged to a Cow-bird. The eggs are creamy-white, 

 moderately spotted with vinaceous and ferruginous ; 

 they measure about '70 x '53. 



Alder Flycatcher. Empidonax trailli alnorum. 



A.O.U. Checklist no 466a. 



Description.- — Closely re.sembling E. trailli, but the general colour 

 above, including the sides of the head, very distinctly brighter greenish- 

 olive ; below, the breast clearly washed with greenish-olive, and the 

 flanks and abdomen a brighter shade of yellow ; bill distinctly 

 smaller, about 45 instead of -50, and the lower mandible much paler, 

 almost white. 



Distribution. — This species replaces Traill's Flycatcher in north- 

 eastern North America, where it breeds from the Yukon to the 

 New England States and the Alleghanies in Maryland ; it migrates 

 south in winter to south-eastern Mexico, Central America, and 

 Ecuador. 



A Flycatcher obtained by Aiken near Limon in Lincoln co.. May 

 27th, 1905, appears to be an undoubted example of this subspecies ; 

 it is probably a straggler from the general line of migration, and is so 

 far the only record from Colorado. It was identified by Ridgway. 



Least Flycatcher. Empidonax minimus. 

 A.O.U. Checklist no 467 — Colorado Records — Baird, Brewer & 

 Ridgway 74, vol. iii., p. 519 ; Henshaw 75, p. 358 ; Allen & Brewster 

 83, p. 195 ; Drew 85, p. 17 ; Morrison 89, p. 146 ; Cooke 97, pp. 19, 

 89 ; Warren 06, p. 21. 



T 2 



