My neighbor mentioned seeing a Sandhill Crane couple up the hill. Today I saw a Sandhill Crane couple feeding along the side of the highway - about 15 miles north - so probably the same couple...
Parent-reared and costume-reared whooping cranes had similar
rates of survival 1 year post-release (69.0% and 64.4%, respectively). The highest risk of mortality was within the first 100 days post-release, and the leading known causes of death were predation and impact trauma due to powerline or vehicle collisions.
https://www.nacwg.org/publications/cranes_sandhill_whooping_2022-4.pdf
My gf from 30 years ago did her first post-college job as a "custom-rearing" - I think it was cranes but maybe it was trumpeter swans? Yep - says "University of Wisconsin Interns" !!
The imprinted cygnets were then transported to designated wetlands where University of Wisconsin interns, concealed in camouflaged float tubes, continued to lead them with the decoys to feeding and resting areas on the marsh.
https://www.trumpeterswansociety.org/file_download/inline/a2ae9774-fbdb-41f4-9537-4cafdc947840
In 2004, after two different breeding adults (from adjacent wetland territories) died from colliding with the same powerline in central Wisconsin, the WDNR worked with Alliant Enegy to install 200 “firefly” bird flapper diverters along a 1-2 km north-south30 years of the Trumpeter Swan recovery program! Youtube talk
stretch of the powerline. These diverters (3.5 inches by 6 inches, acrylic plastic, UV-stabilized, with fluorescent reflective yellow-green patches on the front and fluorescent orange on the back), designed by Timothy Chervick of Swift Creek Consulting and
produced by PR Technologies, Inc., were recommended by The Trumpeter Swan Society
(Madeleine Linck, pers. comm.). We will be monitoring their effectiveness in the coming years.
(Other bird diverters were installed in the 1990s in St. Croix County to address similar powerline collision issues.
While the Decoy-Rearing Program was centered at Necedah National Wildlife Refuge
that's where I went to see her!!
https://data.amerigeoss.org/tl/dataset/1994-wisconsin-trumpeter-swan-decoy-rearing-final-report
https://iris.fws.gov/APPS/ServCat/DownloadFile/5550?Reference=5894
this is the crew I visited!!
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