26 



Black-throated 

 Green Warbler . 



Yel. Palm Warbler. 



Oven-bird .... 



Water-Thrush . . 



Maryland Yellow- 

 throat 



Chat 



Canadian Warbler. 



Redstart 



Catbird 



Brown Thrasher . 



House Wren . . . 



Winter Wren. , . 



Brown Creeper . . 



Wood Thrush . . 



Wilson's Thrush . 



Olive-backed 



Thrush . . . . 



Hermit Thrush . . 



Robin 



Bluebird 



1885. 



May 2 



1886. 



May 11 



Apr.30 May 3 

 May 10 



Apr.29 

 May 2 

 May 19 

 May 2 

 May 2 

 Apr.24 

 May 3 



May 2 



May 11 

 Apr. 13 

 Mar. 7 

 Mar. 18 



Apr.24 

 May 12 



May 4 

 May 4 

 Apr. 2 5 

 Apr.27 

 Sep. 25 

 Sep. 20 

 May 1 

 May 11 



May 17 

 Apr. 7 

 Mar. 10 



May 5 

 Apr. 13 

 Apr.29 

 May 6 



Apr.28 

 May 5 

 May 5 

 May 3 

 May 3 

 Apr.28 

 Apr.24 

 Sep. 27 

 Oct. 8 

 May 1 

 Apr. 25 



May 5 

 Apr. 9 

 Feb. 28 

 Feb. 17 



Apr.26 

 Apr.l8 

 Apr.30 

 May 4 



Apr.30 

 M.ay 5 

 May 13 

 May 1 

 May 5 

 Apr. 15 

 Apr.28 

 Sep. 24 

 Sep. 29 

 May 1 

 May 3 



May 5 

 Apr.ll 

 May 3 

 May 5 



May 6 

 May 11 



May 

 Apr. 



Feb. 19 Mar 

 Feb. 21 'May 



May 4 

 May 5 

 Apr.22 

 Apr. 14 

 Sep. 22 

 Sep. 20 

 May 3 

 May 6 



May 6 



Apr.lO 



7 



1890. 



May 2 

 Apr.l3 

 May 3 

 May 5 



Apr.30 

 May 5 

 May 1 

 May 3 

 May 5 

 Apr.30 

 Apr.30 

 Sep. 19 

 Sep. 24 

 Apr.30 

 May 2 



May 3 

 Apr.13 

 Feb. 26 

 Feb- 23 



1891. 



Apr.l9 

 Apr. 12 

 Apr.29 

 Apr. 19 



May 1 

 May 10 

 May 12 

 Apr.29 

 Jlay 4 

 Apr.l9 

 Apr.l9 



Apr.23 

 Apr.28 



May 4 

 Apr.l2 

 Feb. 24 

 Feb. 17 



1892. 



Apr.30 



Apr.30 

 May 4 



May 3 

 May 3 

 May 15 

 Apr.30 

 Apr.30 

 Apr.30 

 May 5 



May 



May 



May 5 



Apr. 3 



Mar. 9 



Mar. 9 



In cases where there is considerable diversity in the time of ar- 

 rival of a species the earliest dates are often based upon early strag- 

 glers, sometimes single birds, and in such cases the date of the second 

 occurrence generally corresponds pretty closely with the first occur- 

 rence of other years. 



In studying migration, complete daily lists of all the birds seen 

 shoukl be kept by the observer ; the best results being obtained by 

 covering, as nearly as possible, the same section of country every 

 morning at about the same time, and recording the exact number of 

 individuals of each species seen. With a little practice this will be 

 found to be almost if not quite as easy as the use of such elastic and 

 indefinite terms as " common," "abundant," " several," elc. These 

 field notes can be jotted down in a rough note book or on printed 

 blanks, -and afterwards entered in a book with perpendicular columns 

 for the days and a column at the left for the names of the birds. 

 A curve of temperature variation carried along the top of the page 

 will show the coincidence of high temperature with increase in mi- 

 grants, and notes on the general state of the weather, etc., may be 

 entered at the head of each daily column. 



When data from several different stations are to be combined for 

 the study of migratory waves and their relation to meteorology, it 



