20 Kopman, Birds of Louisiana. [jan. 



199. Acadian Flycatcher {Empidonax virescens). A common sum- 

 mer visitor in swampy woods of every character. It is evenly distributed 

 throughout the wet wooded lands of the fertile alluvial region, and occurs 

 wherever there are river swamps and creek bottoms in other sections. It 

 arrives at New Orleans about April 1 . The earliest arrival of which I have 

 a record is March 30, 1904. It becomes common about April 8. It is seen 

 occasionally through most of October. The latest date of departure is 

 Oct. 27, 1900, at Convington. 



200. Traill's Flycatcher {Empidonax trailli trailli). 



201. Alder Flycatcher {Empidonax trailli alnorum). The similarity 

 of this and the preceding form and the apparently indiscriminate way in 

 which they associate in the lower Mississippi valley make it difficult to 

 distinguish between them in their occurrence and movements. Specimens 

 taken on the Mississippi coast, however, appear to be chiefly if not entirely 

 of the latter of the two forms. Whichever one occurs in the fertile alluvial 

 region of southeast Louisiana, and I am inclined to think it is true trailli, 

 is rather rare. It has been noted at New Orleans May 2, and while I 

 believe it has been observed on one or two other occasions, I fail to find any 

 records of these observations. The Alder Flycatcher is rather a common 

 fall transient on the Mississippi coast, where it arrives about Sept. 1. 

 Earliest date of arrival: Aug. 27, 1896, Beauvoir, Miss. Latest date of 

 departure: Oct. 18, 1901, Bay St. Louis, Miss. No records for spring 

 migration. 



202. Least Flycatcher {Empidonax minimus). Not particularly 

 common at any points in southern Louisiana and southern Mississippi where 

 I have made observations, and decidedly rare in the fertile alluvial region 

 of southeastern Louisiana. Arrives at Gulf coast latitude the early part 

 of September. Earliest: Sept. 1, 1900, Bay St. Louis, Miss. The only 

 dates on which I have recorded it in spring in Louisiana are April 6, 1895, 

 at New Orleans, and March 30 and May 9, 1902, at New Iberia, La. 



203. Prairie Horned Lark {Otocoris alpestris praticola). This is 

 doubtless the form to which reference is had in a list of the birds of Louisi- 

 ana by Prof. Geo. E. Beyer, who records the fact of a specimen having 

 been taken and a number having been seen by Gustave Kohn along the 

 shore of Lake Pontchartrain near Mandeville on Jan. 6, 1879. I do not 

 know of any other record of the occurrence of this bird in Louisiana. 



204. Florida Blue Jay {Cyanocitta cristata florincola) . Whether the 

 typical Blue Jay occurs in Louisiana I do not know, but this is undoubtedly 

 the only form present in the southern section of the State. It is not so 

 common in the fertile alluvial region of the southeast as elsewhere, its 

 distribution being somewhat irregular in that section. A rather peculiar 

 feature of its occurrence in this region is the fluctuation of its numbers in 

 the suburban districts of New Orleans. For several years together, it 

 may be rather common there, and then disappears almost entirely for an 

 equally extended period. Thus, while a resident in this region it is evi- 

 dently rather nomadic. In the prairie section of central southern Louisi- 



