22 BULLETIN OF THE 
AN UNUSUAL BIRD WAVE. 
N. A. WOOD AND OTTO M’CREARY. 
[From the University Museum, University of Michigan. | 
On Tuesday, May 2, 1905, the bird observers of Ann Arbor were sur- 
prised by the sudden appearance of a large number of warblers and 
other birds. These birds must have arrived Monday night, as no new 
arrivals had been reported on the preceding day. It is usually counted a 
very good day, in this locality, if ten or twelve first arrivals are reported, 
but the present wave brought 22 species. This is the largest number reported 
for any one day during 25 years of records. 
Most of these birds were seen among large maples and elm trees, and 
along a hedge of large evergreens, upon the campus of the University, and 
within a few rods of the University Museum. The maples were just leafing 
out. Between 7 and 8 A. M. we observed 30 species of birds in this re- 
stricted area, and it would have been difficult to estimate the number of 
individuals of some species. 
This wave was doubtless caused by peculiar weather conditions. It was 
quite cool Sunday night, as ice was observed upon pools of water jearly 
Monday morning. But Monday. night a south wind and a lhght rain 
apparently produced the favorable conditions that resulted in this remarka- 
ble wave. 
recorded for this vicinity, and the averag 
The following is the list of the first arrivals, 
with the earliest date 
e date, as based on 25 years o 


records. 
NAME. EARLIEST DATE. AVERAGE. 
TO svie nau vs eine eens Feeney April 28, 1500...May, 1st week 
Be WNiaisomsy Amelie a4 cloo da eo. ... April 16, 1889...April, 4th week 
3. Yellow-throated’ Wireo. 2 4240: ee ee Ap inl p22 are 3 9 Owns Vay, ealisieaee ke 
4: Blue-headed Vireos soa oo ee ne ley, ee OUR Peale geal: 
S \Wienclaiibare WibrO 5 « - AD Tae e, OS Olt. . April ~28. 
6. Woodcock ve Nv iarmche Om ts oKie: . Mamnchi 22: 
Vea ed eyed .) NAG One aala® coment ne S Geypicill St akg? ©. eon Layee) 
18; Ollive-packed di limislateenseasce career eerie Aprile. 1900s ase, ela yeu o, 
9. Virginia Rail. dase cvayas ene SO) wt: Sco o Ray 19: 
10.: Scarlet ese ea ... April 11, 1886.. me Maye eS: 
11. Blackburnian Warblews rata 2 eV bane er dieSonue: src Naya 8. 
12. Cerulean Warbler 4: ait Ap Gil SO: tal SS 8.n oy geen eer ee Let vaaenee 
13. Black-throated Blue Warble May! 23 QO Aries wees eeee cae: 
14. Tennessee Warbler... PAL NR anna is May 4, 1904... ..May 10. 
15, Nashville VWiarblety sage eet ace etc May 2" 1900 sts ike et Nayar Oe 
16: Chestntt-sided’" Warbler... 5...” April 27, 1889. Nay 2 dak. 
TO Redstart: 3) 0.) Patten beat eet eae ereeas eer eee Assril® 5.) O08 N sateen belay eo 
18: Partla= Warbler... {atten pate net ne Maye? i003 ir ten ee Lame 
19,’ Maznolia «Warbler... (ce ise. ieee te enn Maya. Ay 902% Soret me elena. 
20. Golden-winged Warbler... oon Dany, ee OD RRR te ...May 10. 
21. Palm Warbler.. sen ae ed DAD ELE DSCE 1S SC Sevan veya et 
22: -Prattie Warblers: eG Mette Se ire May 9, 1903. - ok vii A560. 
in 
T 
Fourteen of these species were seen on the campus sith vine remainder 
or near the city. 
The Woodcock was not observed in this vicinity until 
uesday, but it probably had been here for at least a month. 
