14 eH Ee A, UV DsUsB ON FBO sil he eer 
900 North on Oct. 10 (BB). I have had considerable experience with Poma- 
rine Jaegers at sea. Seven unidentified jaegers were observed off Navy Pier 
on Oct. 15 (BB), and three unidentified jaegers were observed off Adler 
Planetarium on Oct. 16 (IS and BB). At least one on each date appeared 
to be parasitics, but the distance involved was too great to be positive. 
GULLS and TERNS 
CASPIAN TERNS were noticeably up in numbers and were present along 
the lake front almost daily from Aug. 3 to Sept. 12, with a peak of 33 noted 
by the C.O.S. at Wolf Lake, Illinois, on Aug. 21. Most of the other gulls 
and terns seemed to be down somewhat in numbers. The Bonaparte’s Gulls 
mostly remained offshore during migration. 
LITTLE GULL — observed at Northwestern University fill on Oct. 9 
(IS and BB). 
ROSEATE TERN — One carefully studied at Wolf Lake on a C.OS. field 
{rip on Aug. 21 (RA, IS and BB). I first noticed the bird when I saw that 
the tail feathers protruded well beyond the wing-tips by three inches or 
more. We also had the advantage of seeing the bird perched on a sandbar 
between a Caspian Tern and Common Tern. After it was flushed, the 
Roseate Tern flew directly over us, putting on quite a display with its flight 
and immaculate underparts. The bill was not entirely black, as has been 
the case with most roseates that I have observed, but was approximately 
60% red. 
CUCKOOS — Both species seemed to be down somewhat during the autumn 
migration. 
COMMON NIGHTHAWK — Extremely abundant during migration. The 
peak seemed to come on Sept. 27, when hundreds were seen (CS and JW). 
The latest report was on Oct. 11 (RV). 
EASTERN PHOEBE — An extremely late Phoebe was seen in Lincoln Park 
on Oct. 29 (CS). 
BARN SWALLOW — A late swallow was observed in Lincoln Park on 
Oct. 8 (EB and CS). 
BLUE JAY — A large southward movement of Blue Jays, 50 or more, was 
noted near Petersburg, in west central Illinois, on Sept. 22 (BB). 
WRENS — The wren migration generally was quite late, with the last 
Long-billed Marsh Wren reported on Oct. 16 (IS and BB); the last Short- 
billed Marsh Wren on Oct. 20 (CS and RV). 
WARBLERS — Some rather late warblers included the Mourning, Oct. 8 
(BB), the Connecticut, Oct. 11 (BB), the Kentucky, Oct. 12 (RV, CS and BB) 
and the Yellow-throat, Oct. 12-15 (IS and BB). All of these observations were 
at Navy Pier Park. 
SPARROWS and FINCHES 
DICKCISSEL — Late and up in numbers. Nine were observed at the 
Northwestern University fill on Sept. 11 (JW and BB). 
