352 DAVENPORT ACADEMY OF SCIENCES. 



299- (654). Dcndroica ca^ridescens (Gmel.). Black-throated Blue 

 Warbler. 



The Black-throated Blue Warbler is a rare migrant in Iowa and 

 was not reported from the western half of the state, although 

 Prof. Bruner has noted it on rare occasions at West Point and 

 Omaha, Neb. (Rev. Birds Neb., p. 102). 



County records : Blackhawk — "rare transient" (Salisbury); 

 ' 'quite rare, though probabh' a regular visitor in the migrating 

 season" (Peck). Jackson — "one of our rarest Warblers; have 

 only noted it a few times" (Giddings). Linn — "rare migrant" 

 (Berry); "noted in migration May 15, 1901" (Keyes). Mahaska 

 — "noted a few times in Mahaska county" (Proc. Bost. Soc , xv, 

 1883, p. 235). Poweshiek — "rare transient " (Kelsey, Jones). 

 Scott — "rare migrant, May 1-14; two seen Sept. 26, 189 1, the 

 only fall record" (Wilson). Van Buren — "shot one male in 1895, 

 only record" (W. G. Savage). Webster — "rare" (Somes). Win- 

 nebago — Shot one male May 14, 1892, a day when warm, rainy 

 weather brought a great wave of migrating Warblers (Anderson); 

 "shot one in spring of 1903, at Forest City" (Halvorsen). 



300. (655). Dc7idroica coronata{\J\x\\\.). Myrtle W^arbler. 



The Yellow Warbler or Yellow-rumped Warbler is probably the 

 most abundant migrant Warbler in Iowa. It is the earliest to 

 arrive in the spring, sometimes before the snow is off the ground, 

 usually from the first to the middle of April, remaining frequently 

 until May 20; arriving from the north from about last of Septem- 

 ber until November i, being most abundant during October. M. 

 E. Peck states that in migration the females usually appear sev- 

 eral days before the males. W. W. Cooke says, "It is the hardi- 

 est of our Warblers — has been known to endure a temperature of 

 20° below zero without apparent inconvenience. With plenty of 

 poison ivy berries to eat, it seems not to care how the mercury 

 stands" (Bird Migr. in Miss. Val., 1884-85, pp. 246-48). Their 

 winter food in the south consists largely of myrtle or bayberries, 

 but in spring and fall they become largely insectivorous. 



301. (657). Dendroica maculosa (Gmel.). Magnolia Warbler. 

 The Magnolia Warbler or Black and Yellow Warbler is a beau- 

 tiful species which is a common spring and fall migrant in eastern 

 and central Iowa, It was not reported from western Iowa, al- 



