ANDERSON — THE BIRDS OF IOWA. 369 



(Proc. Iowa Acad. Sci., 1894, p. 44). "The fourth in order of 

 abundance; a rather uncertain summer resident; for some years 

 he will fail to put in an appearance and the next he may be quite 

 abundant . . . seeks the habitation of man. Two nests within 

 the city limits — May 25, 1892, and May 30, 1893" (Paul Bartsch, 

 "The Wrens of Burlington, Iowa," Iowa Orn., iii, 2, 1897, P- 23). 

 Jackson — ' ' rare transient. The last record I have is a single bird 

 seen April 6, 1890, one seen again next day, and several on April 

 8, 1890" (Giddings). Lee — "scarce summer resident; breeds" 

 (Praeger); "summer resident; not common" (Currier). Linn — 

 "One specimen .seen in May, 1903" (Berry). Van Buren — "sum- 

 mer resident; tolerably common" (W. G. Savage). Webster — 

 "rare; one specimen" (Somes). 



Genus Tkogi.odytes Vieillot. 



Subgenus Troglodytes Viellot. 



332. (721). Trog/odytcs ardoii paikmaiii {A.n(\.). Western House 

 Wren. 



The Western House Wren is an abundant summer resident in 

 all portions of the state from about the middle of April until Oc- 

 tober. Late fall records are apt to be confused with the Winter 

 Wren, which it resembles very much. There has been much con- 

 fusion as to the status of the House Wrens of the vipper Missis- 

 sippi Valley, they having been referred both to the eastern form 

 T. acdon and the western form of T. a. aztccus (= T. a.parkniaiii). 

 Dr.T.S. Roberts (Geol. and Nat. Hist. Minn., 1880, p. 157) reports 

 that R. Ridgway pronounced a series from different localities in 

 the state to be all typical parkinani. In eastern and southern 

 Wisconsin Mr . Wm. Brewster finds typical examples of both forms, 

 acdon and aztccus, the latter slightly predominating in numbers 

 (Kumlien and Hollister, Birds of Wis., p. 122). Robert Ridgway 

 states: '' T. a. acdon has come from the east or northeast and T. a. 

 parkmani from the west or northwest until they have practically 

 met (or perhaps by the present time overlapped) in the lower 

 Wabash Valley . . . previous to about 1870 Thryomanes bewicki 

 having been the only 'house wren' of that region" (Birds of N. 

 and Mid. Am., iii, 1904, p. 583). 



The Western House Wren in Iowa is a very tame and familiar 



