NORTH 
% 
EGG LAYING (Span of dates) 
30 APR MAY Hint JUL AUG 
. | 
BS ee f : f |=—— Empidonax 
LO 7.0 
es CENTRAL ee 
FE ——EGG LAYING - 5.0 
S 4.0 
One 3.0 
3 2.0 
nh ae i 
20 30 (Om ZOmerOO 2) Sy eb) S 19 
BO 
ae oe 
APR MAY J 
Fig. 34. — Egg-laying and migration seasons of the Traill’s 
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 
38 
fees 
[Sic ) 19 
Goao 
BO hd 
20 
UN JUL AUG 
scale). Asterisk symbols represent counts made in other years or by ¢ 
observers. Shaded areas show the percent of eggs laid on a given 
(right scale), or the span of dates during which egg laying has 
