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A Summary of Restoration efforts
in the Loess Hills
Background:
Sharp-tailed
grouse and Prairie chickens are often referred to as prairie grouse.
Both species were present, and provided a ready food source for early settlers
of Western Iowa.
By 1892,
the changing western Iowa landscape and market hunting nearly eliminated
sharptails and prairie chickens from the region. As settlement and
agricultural development continued, their numbers continued to decline
until both species were gone from western Iowa.
In the
late 1970’s interest developed in re-introducing prairie grouse to western
Iowa. In 1980, 53 greater prairie chickens were obtained from Kansas
for release in the Loess Hills, followed by the release of 30 additional
birds in 1982. Both attempts failed to establish prairie chickens
in their original range. While restoration of prairie chickens in
southern Iowa has been successful, further attempts were not made in the
Loess hills.
By 1986,
a proposal was written to re-introduce sharp-tailed grouse to the Loess
Hills. Habitat preferences and behavioral characteristics suggested
that sharp-tailed grouse were a better candidate for successful restoration
in the Loess Hills. The plan identified areas in Monona, Woodbury
and Plymouth counties that contained suitable habitat for the year-round
needs of sharp-tailed grouse.
The plan
was to obtain winter-trapped birds from South Dakota, hold them in pens
until spring, where they would be released on an artificial lek.
The proposal called for two consecutive annual releases of 100 birds.
A “soft release” was planned, where birds are placed on the site the evening
before, and the cages are opened prior to sunrise. The technique
includes use of a tape player to provide recorded sounds of birds displaying
on a lek. This technique had been used successfully in keeping birds
close to the lek in releases in Kansas.
Negotiations
began with South Dakota to obtain sharptails in trade for Iowa wild-trapped
turkeys. On April 5, 1990, 11 males and 8 female sharptails were
received, held in pens, and “soft released” on the artificial lek.
This attempt proved unsuccessful with few sightings the first year, and
no birds sightings in subsequent years.
Between
1990 and 1993, wild turkeys were again provided to South Dakota in
trade for 150 sharptails to release in the spring of 1995 and 1996.
Details of the most recent releases are as follows:
1995 Release:
Iowa DNR
received 73 sharp-tailed grouse from South Dakota on January 13, 1995 and
held them in three 10 foot by 100 foot pens at Badger Lake WMA until their
release on the 22nd and 23rd of March. 4 birds died between the time
the birds were received and the time they were released. Two mortalities
resulted from injuries suffered during handling, and two more birds died
while in the pens one of undetermined causes.
The evening
before release, the birds were dip netted after dark in the holding pens,
transported in burlap sacks and banded. Banded birds were placed in release
boxes and transported to the release site. The boxes were staked
in placed and left for release the following morning. The same
procedure was followed for releases on two consecutive days.
1996 Release:
Seventy
seven sharp-tailed grouse were received and held by Iowa DNR for release
in the Loess Hills in Monona County Iowa. The birds were the second
installment of 150 sharptails, to be provided by South Dakota GFP in trade
for wild turkeys received between 1990 and 1993.
The tape
player and speakers were set up on the release site in preparation for
release of birds. The site was monitored in early morning to determine
whether birds released in 1995 were returning to the site. No previously
released birds were observed at the site.
A review
of activity from the 1995 release indicated that birds scattered widely
within a few days of release. It is generally understood that females
range widely early in the breeding season, while later in the season, they
remain in the vicinity of the lek. Males become more active later
in the breeding season, with increased activity evident on the lek site.
In an attempt to maximize pairing, and increase the probability of reproduction,
the birds were released two weeks later than in 1995.
Update
Since the
1995 and 1996 release, sharptails have been observed in the general area
of the release site as well as in an area about 15 miles away. A
dancing ground has been located, and reproduction has been confirmed with
a brood first reported in the summer of 1996. Occasional reports
of individual birds are received each year in the vicinity of the
original release site.
One landowner
reported seeing birds in an area approximately 15 miles northwest of the
release site during the fall and winter of 1996, 97 and 98. In the
spring of 1999, an active lek of 6 birds was discovered in rolling terrain
in the vicinity of the fall and winter sightings. A sharptail brood
was reported in the lek area in the summer of 1999.
Turkeys
have been provided to South Dakota in trade for additional sharptails.
We expect to receive 186 sharptails for releases in the spring of 2000
and 2001. Releases will bolster the small existing population and
provide for additional population growth and increased genetic diversity.
While it
is not likely that Iowa will provide a huntable population of sharp-tailed
grouse, we can take pride in knowing that we have returned a native species
to an area where it once flourished. Hopes are that the cackling
and cooing sounds of the sharp-tailed grouse will once again become a more
common part of the western Iowa landscape.
Please report sightings of Sharp-tailed Grouse in Iowa to the Wildlife
Diversity Program. To report grouse sightings, include the date, your
name, address, and telephone number. Also, as much detailed information
concerning the observation site as you can: number of grouse, presence
of young, and location (the legal description of the location is best-
township, range, and section numbers).
Wildlife Diversity Program
Iowa Department of Natural Resources
1436 255th St.
Boone, IA 50036-7557
phone: 515 432-2823
fax: 515 432-2835
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