CENTRAL 
( ys, a 
1 a 1 See od eee 
Ranges eee ; HES ah 
CEABREEDING =~ \—~ . ie 
SS winter oes rv 
+ é é " . 5 
8. 47. — General distribution of the olive-sided flycatcher. The 
ied range may include large sections in which populations of the 
*s are thin or even absent because of the nature of the terrain and 
ty of suitable habitat. 
Fig. 48. — Migration seasons of the olive-sided flycatcher 
in different areas of the state (see Fig. 1). Spring and fall 
graph lines (1967-1970) show highest daily counts of each 2 
days (left scale). Asterisk symbols represent counts made in 
other years or by other observers. 
OCT 
VERMILION FLYCATCHER 
(Pyrocephalus rubinus) 
This colorful species of the far southwestern United 
States and Central and South America has been found 
repeatedly in the St. Louis, Missouri area in recent years, 
both in the spring — April and May (Kleen & Bush 
1971la, Fawks 1971) and in the fall — September- 
November (Petersen 1968a, Hamilton 1968, Fawks 
1968a, Anderson & Bauer 1968, Kleen & Bush 1973). As 
many as four vermilion flycatchers have been seen 
together, and one male remained from at least 
September 30 to November 12, 1967 near St. Louis. 
In the spring of 1962 we saw an adult male vermilion 
flycatcher on the University of Illinois campus, Urbana, 
but our notes on this observation were lost and the date is 
unknown. 
A better-documented record of the species in Illinois 
was an adult male seen May 4, 1973 at the Chicago 
Botanic Garden, Glencoe, Illinois by at least eight 
observers from the Evanston Bird Club, including Mrs. 
Perry Jones of Winnetka and Mrs. Sidney North of 
Evanston. The bird was tame, and was observed at 
length, flycatching. Several of the observers knew the 
species from observations in its normal range. 
LITERATURE CITED 
AssoTtT, C. E., A. Reuss, K. BarTeL, and F. LABAHN. 1933. List of 
birds observed in area of Blue Island and Orland Park, Illinois, 
1933. Odlogist 50(11):142-148. 
Apvcock, F. 1922. Ecological survey of the fauna of Lake Knox. Illinois 
Academy of Science Transactions 15:186-199. 
53 
