112 The Wilson Bulletin — Xo. 71. 



(]uadraugles cluriug that fall (1905). The median spring dates 

 are: for arrival, May 5; arrival of bulk, May 11 ; departure of bulk. 

 May IS; last seen. May 22. Extreme spring dates are April 28, 

 189G, and May 28, 1908. The scattered fall records indicate that 

 the birds arrive early in the second week of September and remain 

 alx)ut a month (October 7, 1907). 



208. Dciulroicii (verulca. — Cerulean Warbler. 



Locally common during the summer in the taller woods, nesting 

 in beech and maple trees. I have failed to find it in any of the seem- 

 ingly suitable woods within two miles of Lake Erie, and have never 

 found it anywhere on the Cedar Point sand spit, even in the migra- 

 tions. I am unable to explain its absence near the lake. The me- 

 dian date of spring arrival is Miay 4. My latest fall record is Sep- 

 tember 21, 1900. On May 20 and 21, 1904, two individuals were 

 noted singing on the Oberlin campus. I have never seen any in- 

 dications of a marked southward movement in the fall, and doubt 

 if there is any such fly line in the region. 



208. Deinlroica ijciisylvaiiica. — Chestnut-sided AYarbler. 



Common as a spring migrant, but hardly more than casual in the 

 fall. This dainty little warbler regularly comes into the dooryards 

 and orchards in town and often swarms in parks, and is as com- 

 mon in the woods. On May 13, 1907, when the greatest migration 

 of small birds that I have ever witnessed was in full swing, this 

 wrabler literally swarmed all over the Cedar Point sand spit from 

 one end to the other. There was no estimating the numbers. The 

 median date of arrival in spring is May 5, of departure, May 21 ; 

 but it has arrived on May 2 four times, and May 3 and 4 once each. 

 The only fall records are September 21, 190G, and September 30, 

 1907. In the first instance there were two birds in immature plum- 

 age, in the second ten individuals. There is no evidence that this 

 warbler now nests within the region. If it ever did so the time 

 must have preceded the disappearance of the pine and cedar woods 

 bordering the mouths of the rivers. 



209. Dendroica castancu. — Bay-breasted Warbler. 



Regular and sometimes common during the spring migrations; 

 regular, but seldom common, during the fall migrations. It is a 

 woods-loving bird, but is often foinul in parks and about premises 

 where there are fair-sized to large trees. It was common on the 

 Cedar Point sand spit on May 13, 1907. I did not find it during the 

 last week of August on any of the islands in 1905. The median 

 date of arrival in spring is May 11, and of departure, May 20. My 

 late.st spring record is May 28, 1907. Fall records indicate that 

 the first fall migrants appear about the first of September and re- 



