(10) 
SPRING MIGRATION NOTES OF THE CHICAGO AREA 
1913 1914 
1915 1916 1917 1918 1919 1920 
-r^ Mviochanes virens 
"Tpr.2V May 4 Apr. May 15 May 5 May 1. May 19 
Common summer resident. 
.3. May s'^-^-r r/Ta:r May .S May 1. 
Fairly common migrant. 
rs-rr...,. „„.rc.r'sr"- .... 
Rare summer resident; fairly common during migrations. 
466. Traill's Flycatcher ^"^^'^'T. ''''''' May 19 
May 22 May 19 ^^y 
Breeds commonly near Argo; rare elsewhere. 
Aai T pc.;t Flvratcher Empidonax minimus 
467. e May 12 May 4 May 20 May 2 
Common migrant; rather uncommon summer resident. 
474b. Prairie Horned Lark Otocoris alpestris praticola 
Apr. 6 Feb. 20 Feb. 22 Apr. 25 Mar. 19 Apr. 
Fairly common permanent resident. 
477. Blue Jay Cyanocitta cristata cristata 
Mar 30 Jan. 2 Jan. 10 Jan. 3 Mar. 4 Apr. 6 Feb. 8 Mar. 
Very common summer resident generally wintering. 
Corvus brachyrhynchos brachyrhynchos 
Ap^l Mar. 14 Feb. 27 Jan. 22 Feb. 12 Mar. 18 Feb. 1 Feb. 22 
Very common permanent resident. 
AdA Rohniink Uolichonyx oryzivorus 
!pr 26 Apr. 26 Apr. 25 May 6 May 10 May 11 May 10 May 8 
Ad^ rnwhirrl MOlOmrus cixei duci 
e"'"";^ Mar. 21 Apr. 2 Apr. 5 Mar. 10 Mar. 17 Apr. 5 Mar. 30 
Common summer resident. 
Cowbird Molothrus ater^ater 
Mar. 13 
Abundant summer resident. 
497. Yellow-headed Blackbird Xanthocephalus xanthocephalus 
Formerly'comm\)n'summer''resident7but becoming rarer. The only record 
for a breeding colony in recent years in our area is a colony which nests at 
Hyde Lake, where in 1920 we found about twenty-five pairs. 
.i 9 8 Red-winged Blackbird Agelaius phoeniceus phoeniceus 
Feb. 9 Mar. 16 Mar. 12 Mar. 18 Mar. 9 Feb 24 Mar. 16 Mar. 14 
Abundant summer resident; occasionally winters. 
501c. Southern Meadowlark Sturnella magna argutula 
Mar 12 Mar. 14 Feb. 27 Mar. 18 Mar. 9 Mar. 13 Mar. 16 Mar. 13 
* Abundant summer resident; sometimes winters during mild seasons . 
506. Orchard Oriole Icterus spurius 
May 9 May 10 
Rather rare summer resident. 
507 Baltimore Oriole Icterus galbula . a oq 
May 2 Apr. 27 May 3 Apr. 24 May 10 May 11 May 4 Apr. 29 
Common summer resident. 
