THE ILLINOIS AUDUBON SOCIETY Non-Profit Org. 
1017 Burlington Avenue ee roe 
Downers Grove, Illinois 60515 P 
DOWNERS GROVE 
ILLINOIS 
RETURN REQUESTED Sen MENS 
THE ILLINOIS AUDUBON SOCIETY 
The Society was organized seventy one years ago for the protection of 
wild birdlife. Throughout its existence, the Society has promoted measures 
to protect birds and to prevent destruction of the natural areas which 
birds need for survival. In many cases, the Society has worked to see 
that existing laws are observed — since mere enactment of laws never 
has guaranteed their enforcement. Illinois residents of all walks of life 
are invited to join the IAS in advancing the cause of wildlife conservation, 
as well as in the Society’s cooperative efforts with all other organizations 
which work for protection of our natural resources. 
Headquarters of the Illinois Audubon Society are in the Field Museum 
of Natural History, Roosevelt Road and Lake Shore Drive, Chicago 60605, 
where public lectures are held. Individual and group membership sup- 
port is earnestly solicited. Membership fees are: 
Patron $1,000 
Benefactor $ 500 
Life Member $ 200 
Supporting Member $25 annually 
Club Affiliation $15 annually 
Contributing Member $10 annually 
Family Membership $7.50 annually 
Active Member $5 annually 
SUBSCRIPTIONS, MEMBERSHIPS, CORRESPONDENCE: 
THE AUDUBON BULLETIN is the official journal of the Illinois Audubon Society. It is 
published quarterly—in March, June, September, December. The subscription price is $5.00 
per year (which coincides with dues of active members). Single copies are $1.25. The 
specia! subscription rate for libraries and schools is $3.00 per year. 
New and/or renewal membership applications to the Society, as well as change of 
address notices, shouid be sent to Illinois Audubon Society Regional Headquarters, 1017 
Burlington Ave., Downers Grove, III]. 60515. 
EDITORIAL CORRESPONDENCE & MANUSCRIPTS should be directed to the editor. 
D. W. Bennett, 49 Valley Road, Highland Park, III. 60035. 
