Occasional Papers of the Museum of Zoology 35 



migrant in the region. At Warren Woods it was noted but 

 three times after May 16, 1919. At Warren Dunes a few 

 were seen after May 3, 1920, usually on the ground or low 

 bushes. 



Hylocichla ustulata swainsoni. Olive-backed Thrush. — A 

 very common migrant at Birchwood Beach after August 29, 

 1917, and after May 15, 1918. At Warren Woods it was 

 abundant from May 6 to 12, 1919. This species was usually 

 seen on the ground about wet places in the heavy forest. 



Hylocichla gut\tata pallasi. Hermit Thrush. — This common 

 migrant is also the earliest of all the thrushes. It was noted 

 April 28, 191 8, at Birchwood Beach and at Warren Woods 

 May 5 to May 10, 1919. At Warren Woods it was noted 

 on our arrival April 30, 1920, but was gone by May 1 1. Like 

 all the thrushes, this was usually seen on or near the ground. 

 Planesticus migratoriiis migratorius. Robin. — This summer 

 resident was not very common about the dunes, but was more 

 common on the farms back of them, and during migration it 

 became abundant. At Warren Woods in 19 19 a few were 

 seen about the edge of the woods, but seldom in the heavy 

 forest. At Warren Dunes it was noted on our arrival, April 

 29, 1920, but was a rare breeder in the region. One nest was 

 found in a small fruit tree near our camp. The region is sandy 

 and the scarcity of worms may be the cause of the rareness 

 of this species. 



Sialia sialis sialis. Bluebird. — This is a summer resident, 

 but is common only during migration. At Birchwood Beach 

 very few were found nesting in 19 17- 18. At Warren Woods 

 in 1920 only three pairs nested in the orchards near the edge 

 of the woods. At Warren Dunes it was noted on our arrival, 

 April 30, 1920, but very few nested here. This species prefers 

 cultivated areas and the vicinity of orchards for its habitat. 



