1070 EEPORT OF STATE GEOLOGIST. 



In fall they are abundant, frequenting every kind of woodland from 

 second-growth to virgin forest. While they are changed some in appear- 

 ance from the previous spring, they may readily be recognized. They 

 first appear, a few of the vanguard, late in August, and remain until 

 after October 1. First arrivals: Vermillion County, August 23, 1897; 

 Lafayette, August 27, 1896; Lake County, September 2, 1883; Wabash, 

 September 11, 1892; Brookville, August 29, 1887. Last records: 

 Lake County, October, 1881; Chicago, October 5, 1894, and 1895; 

 Lafayette, October 5, 1895; Brookville, October 8, 1884, and 1885. 

 The Black-throated Green Warbler is the most even in its dates of 

 migration of any of the genus. This is distinctly shown when one 

 examines a series of dates, running over a number of years. Their 

 food is practically the same as all of the family large numbers of 

 insects. Prof. King found that of twelve specimens examined, one 

 had eaten a moth; three, seven caterpillars; three, eleven beetles; and 

 one, two diptera; one, six larvas, probably caterpillars, and one a 

 heteroptera (Geol. of Wis., I., p. 502). Prof. Forbes has ascertained 

 they eat hymenoptera, caterpillars and curculios. Their woodland 

 habits, and also those of other species, while beneficial, are not so 

 noticeably of value as they would be if they frequented our fruit and 

 shade trees more. Doubtless, with the lessening of our wooded area 

 and the increase of acreage in orchards, they will more and more be 

 found there. 



276. (670). Dendroica kirtlandi BAIRD. 



Kirtland's Warbler. 



Adult. Above, bluish-gray; back, more brownish and streaked with 

 black; lores and narrow frontal band, black; no white wing bars; a white 

 spot on each eyelid; below, pale yellow; sides of throat and of body 

 streaked with black. Adult Female. Similar, but paler. 



Length, 5.30-6.00; wing, 2.60-2.90; tail, 2.25-2.50. 



EANOE. From Bahamas, northwest over southeastern United 

 States, migrating through eastern part of Mississippi Valley and west- 

 ern Lake region. Breeding range unknown. Winters in Bahamas. 



Nest and Eggs, unknown. 



Kirtland's Warbler is a very rare bird, known from but a few locali- 

 ties in the United States as a migrant. 



The first specimen known from Indiana was taken at Wabash, by 

 Mr. W. 0. Wallace, May 4, 1892. 



Mr. Wallace says: "I took it in a thicket. It was alone, there 

 being no other birds in the near vicinity of it. It seemed to be an 



