Species. 



Lanesboro, Minnesota, 

 L885 L890. 

 Robin 



Fox Sparrow • 

 Townee 



Brown Thrasher 

 Rose-breasted Grosbeak 

 Ovenbird 

 Baltimore Oriole 

 Scarlet Tanager 



Grinnell, Iowa. 

 L885 L890, 



Robin 



Fox Sparrow 



Towhee 



Brown rhrasher 



Rose-breasted Grosbeak 



Ovenbird 



Baltimore Oriole 



Scarlet Tanager 



Average 



date 

 Of 



arrival. 



March 10 



April 

 April 

 April 

 May 

 May 

 May 

 May 



4 

 16 

 24 



1 



4 



1 



10 



March 6 



March 26 

 March 21 



April lo 

 April "JO 

 April 29 

 April 29 

 May 



Average 



Average of both localities 



Mean temperature of the day the bird 

 was first seen. 



\\ erase 



deg. F. 



11 

 Id 

 56 

 57 

 59 

 55 

 58 

 58 



35 

 46 

 49 



o7 

 57 

 55 

 55 



.Hi 



Ex- 

 tremes. 



lifiT. P. 



31 52 



38 52 



38 66 



45 67 



36 73 



36 7;? 



44 73 



36 69 



12-24 



38 56 



8 58 



45 67 



49 71 



17 62 



\9 70 



17 71 



Extreme 

 variation 



Average 



variation. 



ties;. P. deg. P, 



21 



14 



IS 



37 

 29 



33 



4 



S 



s 



10 



10 



9 



9 



32 

 IS 

 20 

 22 

 22 

 15 

 21 

 24 



22 



:i 



