140 Trans. Acad. Sci. of St. Louis. 



463. Empidonax flaviventris Baird. Yellow-bellied Fly- 

 catcher. 



Tyrannula flaviventris. 



Geog. Dist. — Eastern North America; breeds from Massachu- 

 setts northward to Newfoundland and southern Labrador, and 

 west through densely forested regions to Manitoba. In winter 

 through eastern Mexico to Panama. 



In eastern Missouri a fairly common transient visitant from May 

 5 to June 1 (exceptionally later, as in 1907 to June 4) and from 

 August 25 to September 20. There is only one record from 

 western Missouri, that of W. E. D. Scott, who took a specimen at 

 Warrensburg, May 18, 1874. All other observations on the 

 species were made along the eastern edge of the state from 

 Keokuk to the southern state line and in the southeast west to 

 Carter Co., where Mr. E. S. Woodruff took a specimen at Grandin, 

 May 1(), 1907. The fact that it has not been reported from 

 other localities is no proof that it does not occur, but the species 

 easily eludes detection, being late in transit when vegetation 

 is already luxuriant and confining itself to dense shrubbery. It 

 is most commonly found in low situations, willow thickets in the 

 flood plains and shrubbery along creeks of the bluff region, but 

 in the height of migration it is often found in parks and gardens, 

 orchards and hedge-rows. Although usually silent, its peculiar 

 call-note, different from those of the other eastern members of 

 the genus, is sometimes heard toward the end of its stay. 



*465. Empidonax virescens (Vieill.). Green-crested Fly- 

 catcher. 



Empidonax acadicus. Muscicapa querula. Tyrannus acadicus. Acadian 

 Flycatcher. 



Geog. Dist. — Eastern United States, north to southern New 

 York and southern Michigan ; west to Nebraska, eastern Kansas 

 and Texas. Winters in Central America, Cuba and Yucatan. 



In Missouri a common and generally distributed summer 

 resident from April 28 to September 25. Of the four species of 

 this genus occurring in Missouri this is by far the most com- 

 mon, because found in all parts of the state wherever the axe has 

 spared enough trees to leave at least a semblance of a forest. 

 Unlike its relatives, the Wood Pewee and Great Crested, the 

 Acadian has not yet learned to feel at home anywhere else but 

 in the forest itself and, if it does not yield soon, general defor- 



