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Blackburnian Warbler — A common migrant. Easy to identify but 
usually feeds well up in the tree tops. 
Chestnut-sided Warbler — A common migrant. Forbush and May class 
it “as a bird of the shrubbery and lower branches” but I never thought 
of it in that way. I believe I recorded it just as often well up in the trees. 
Bay-breasted Warbler — A fairly common migrant. Easy to identify. 
Its color pattern somehow gives it the appearance of being a large warbler. 
Black-poll Warbler — Appears on the list between two groups I am 
designating as “fairly common” and “uncommon.” A regular migrant but 
in my experience seen infrequently, and only as single individuals. 
Northern Pine Warbler — A rare migrant. One day in the fall of 1937 
I was making observations in Calvary Cemetery with a man I regarded as 
a keen bird student and he was “identifying” about one-half of the birds 
we were seeing as this species. I was amazed at my own ignorance until 
I realized he was recording at least two different species as pine warblers. 
Prairie Warbler — A rare migrant. Saw it once on May 9, 1944, in 
Calvary Cemetery. Two weeks earlier, the same year, I had seen it several 
times in southern Indiana. 
Western Palm Warbler — Another of the four most abundant warblers. 
If fall migrations were included, it would head the list. Another case 
where effortless identification would affect the total listed. 
Oven-bird — A common migrant and a summer resident. Single birds 
observed regularly on the ground, under shrubbery in backyards. 
Grinnell’s Water-Thrush — A common migrant. This and the northern 
water-thrush are not distinguishable in the field, but based upon present 
concepts of distribution the Grinnell’s is most likely to be the bird encoun- 
tered in our region. 
Louisiana Water-Thrush — A rare migrant. This is probably more 
common than my list indicates, but I am, of course, depending on sight 
records and there were only seven occasions when I could satisfy myself 
that it was not one of the species mentioned above. 
Kentucky Warbler — Rare. More likely to be a summer resident than 
a migrant in the Chicago region. One of the most freakish observations 
I ever made was to see one of these birds near my home on October 4, 
1942. It seemed to be in full spring plumage and I observed it at close 
range for five minutes. 
Connecticut Warbler — An uncommon migrant. Recorded six years; 
never more than two in a year except in 1945 when I saw four, all after 
May 24. Am sure the total would be higher had I regularly done more 
field work the last week of May. 
Mourning Warbler — An uncommon migrant. Of the 17 birds recorded, 
seven were observed last spring. As in the case of the Connecticut warbler, 
I believe this was due to more late spring recording, as I saw two on 
May 27, one May 30, two June 3, and one June 5. My first sight of it has 
always been below eye-level. This and the Connecticut warbler are the 
last to arrive. 
