1909.] THE CAYUGA LAKE BASIN, N. Y. 451 



345 (728). Sitta canadensis Linnaeus. Red-breasted nuthatch. 

 Common transient and occasionally found in winter. The aver- 

 age date of spring arrival is May 5, the earliest, , April 28, 1908. 

 None have been recorded later than May 30. On January 5, 1908, 

 a specimen was shot at Ithaca and January 31 another was seen. 

 A second specimen was taken at Ithaca, January 25, 1909. The first 

 migrants arrive from the north the very last of August, becoming 

 common the first two weeks in September. They remain until the 

 middle of November. 



81. Family Parid^. The Chickadees. 



345a (731). Baeolophus bicolor (Linnaeus). Tufted titmouse. 

 An adult male was taken May 30, 1909, at Michigan Hollow. 



346 (735). Penthestes atricapillus (Linnaeus). Chickadee. 

 Common permanent resident. Nests with eggs have been found 



from April 29 to June 3. The earliest record of nest-building is 

 March 24, 1890. 



82. Family Sylviid^. The Old World Warblers. 



347 (748). Regulus satrapa Lichtenstein. Golden-crowned kinglet. 

 Common transient and an occasional winter resident. The aver- 

 age date of spring arrival is April i, the earliest, March 13, 1903. 

 The average date of departure is May 7, the latest May 17, 1902. 

 Migrants arrive in the fall as early as September 8, but they do not 

 become common until the first of October. They remain until 

 November 10. 



348 (746). Regulus calendula (Linnaeus). Ruby-crowned kinglet. 

 Common transient. The average date of arrival is April 19, the 



earliest, April 12, 1907. The average date of departure is May 

 9, the latest. May 22,, 1907. In the fall the first arrivals are noted 

 the last of September. They are common from October i to 15 

 and have disappeared by the twenty-fifth of the month. 



83. Family Turdid^. The Thrushes. 



349 (755)- Hylocichla mustelina (Gmelin). Wood thrush. 

 Common summer resident. The average date of arrival is May 



