NUMBERS SOARING FOR BALD EAGLES IN ILLINOIS
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NUMBERS SOARING FOR BALD EAGLES IN ILLINOIS
SPRINGFIELD, ILL., March 28, 1997 -- The number of bald eagles wintering in Illinois
is at an all-time high, according to results of the Department of Natural Resources' midwinter
survey.
"Each year an intense effort is undertaken by staff and volunteers to count wintering
eagles in Illinois," said DNR Director Brent Manning. "Results from this year's count show the
number of eagles is up 50 percent from last year."
Long-term, eagle numbers are increasing at about 17 percent annually. At that rate, the
bald eagle population is doubling every five years.
Manning said the annual survey is not intended to be an exact count of every eagle in the
state, but it does signify population trends. This year, 2,459 eagles were sighted as compared to
1,733 last year.
"The numbers allow us to judge how eagle populations are doing. What we're seeing is a
steady increase in numbers counted in Illinois each winter," he said.
Currently listed as a federally threatened and state endangered species, bald eagles have
made a comeback since the pesticide DDT was banned in 1972 and concerted conservation
efforts were put in place.
The Illinois count is part of the Midwinter Bald Eagle Survey that was initiated by the
National Wildlife Federation in 1979. Current counts are coordinated by the Biological
Resources Division of the U.S. Geological Survey. During a targeted two-week time period,
observers in participating states are asked to take two consecutive days to count the number of
eagles they see. Reports from the states are combined to give a picture of bald eagle populations
nationwide.
Sue Lauzon, executive director of the Endangered Species Protection Board, said since
weather plays a major role in where eagles congregate, high counts in Illinois still could be offset
by a low count elsewhere.
"Illinois is one of the premiere areas for wintering bald eagles in the lower 48 states,"
Lauzon said. "We can't be sure what the overall picture is until we get the counts from the other
states, but we are fairly certain the high count in Illinois is a reflection of a generally increasing
trend nationwide, and that the bald eagle population continues to recover."
Lauzon noted an ever increasing number of bald eagles are remaining in Illinois to nest
during the spring and summer, also signaling a strong recovery of the bird. Last year there were
20 active nests, 12 of which successfully fledged 20 young birds and new nests already have
been discovered this year.
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THE 1997 MIDWINTER BALD EAGLE SURVEY RESULTS
AREA ADULTS IMMATURE UNAGED TOTAL
Mississippi River 1,209 531 204 1,944
Illinois River 258 119 21 398
Other Areas 77 40 0 117
TOTAL 1,544 690 225 2,459
ADULTS 62.8% MISSISSIPPI 79.0%
IMMATURES 28.1% ILLINOIS RIVER 16.2%
UNAGED 9.1% ALL OTHER AREAS 4.8%
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