352 The Wilson Bulletin — No. 91 



For many years the Flicker did not increase in numbers, but for 

 three seasons more have returned and excess in numbers betrays 

 a serious fault in this good bird. Under these conditions he is 

 yuilty of nurturing family feuds and robs the nests of his fellows 

 that have located near him. So fighting Flickers are adding to the 

 sorrows of a 1)attling world. 



Althea R. Shekman. 

 National. Iowa. 



SOME PECrLIAKITIES OF THE 1915 SPRING MIGRATION 

 IN NORTHERN OHIO. 



If one ever had any doubts alxmt the correlation of bird move- 

 ments with waves of temperature the past migration season would 

 furnish (ondusive proof that there is. During the unseasonable 

 warm wave of the second week of February the first migrants ap- 

 peared, fully two weeks ahead of schedule. This was on February 

 18 to 10. The second wave was on February 10 to 21. the third not 

 until March i:'. to 14. the fcmrth on Minrch 20 to 2:!. the lifth April 

 4 to 7. the sixtli April 10 to 12. the seventh April lO to 20. the eighth 

 April 24 t(i 2S. the ninth May 2 to 0. the tenth May 10 to 17. and 

 the last, composed of a great host of migrating warblers and 

 thrushes. May 21 to June 1. Mo^t of these waves were unusually 

 well-defined, but of course there were scattering records which 

 could not be correlated with anything, as usual. These scntteriug 

 records may be due to oversight I'.ecause the individuals were few. 

 or they may be due to the siulling over of a few individuals, the 

 crest of whose wave of jnigration lias halted a short distance to 

 the south of this station. 



The Ruddy Duck arrived ."0 d.iys before its schedule: the Gow- 

 bird 24 days; Red-headed Woodpecker 22 da.vs : Yellow-legs 20 days; 

 llenslow's Sparrow l!> days; Song Sparrow IS days; Yellow-billed 

 Guckoo 17 days; Lincoln's Sparrow 10 days; Grow. Robin. Bluebird, 

 Red-winged lUackbird. Ruby-throated Hummingbird, 15 days ; Meadow- 

 lark. Bronzed (Jrackle. Gape ?ilay Warbler. Acadian Flycatcher. i:5 

 days; riiiladelphia \'iieo and Red-eyed Vireo 12 days; Wood Pewee 

 il days; Blai-kbunii.in \\'arliler. Whippoorwill. House \Yren. and 

 Rough-winged Swallow 10 days; Killdeer. Gatbird. and Least Fly- 

 catcher !> d.-iys : Orange-crowned Warbler, Nashville Warbler S 

 days; Orchard Oriole. Water-Thrush, and Grested Flycatcher 7 

 days; and Spotted Sandpiper days ahead of schedule. The aver- 

 a'.,'e range either side of the median may be assumed to be five 

 days, as it so works out from year to year. 



The Sw.inip S]ian'ow was 2."> days late; Fox Siiarrow nnd Belted 

 Kiii'_'tisher 17; PIkcIu" ;ind Towliee 14: Xortlieni I'anila Warbler \l ; 



