Friday, January 31, 2020
Wednesday, January 29, 2020
Jan 29, 2020: Eastern Bluebird
In Winter Eastern Bluebirds eat large amounts of fruit,
including juniper berries, hackberries, sumac, dogwood berries, and
honeysuckle. They may be lucky enough to find some insects. This
male and 4 other bluebirds were found in the small patch of woods between the
lakes trail and Dawes Dr (SE corner of the Park). (Wolf. Oesterreich, 1/29/20)
Jan 27, 2020: Trumpeter Swans
Only 93 Trumpeter Swans (65 adults + 28 juveniles) and 1
adult Tundra Swan were present today among the Canada Geese, Mallards, and 2♂
Green-winged Teal. This total is much lower than the record high of 199
on the 17th. There had been one swan that stopped flying off to feed and
would remain at the Park. This bird was found dead on the morning of the
17th and was collected later that afternoon. The swan was turned over to
Marlene Ehresman, of the Iowa Wildlife Center (Ames). She, in turn,
brought the bird to the ISU Veterinary Diagnostic Laboratory to determine the
cause. Apparently the swan had sustained an injury to its left side and,
thus, couldn't fly anymore.
So where are the swans that have been present at the Park,
but are no longer here? Here's a possibility: Yesterday, while
conducting a Climate Watch survey for the National Audubon Society, which
included Brushy Creek Recreation Area (Webster County), we (Eric Ollie, Karen
Hinkle, and I) found over 500 Trumpeter Swans on the ice and along the open
water at the lake. this was the largest concentration of Trumpeter Swans
I have ever encountered! (Wolf. Oesterreich, 1/27/20)
Jan 24, 2020: Northern Shrike
Northern Shrikes, along with their cousin, the Loggerhead
Shrike, are predatory songbirds. They feed on small birds, mammals, and
insects. They are also know as "butcherbirds" for their
sometime habit of impaling their prey on spines or barbed wire. Locally,
Northern Shrikes are present in late Fall and Winter months and breed in the
taiga and tundra areas. The Loggerhead Shrike breeds in Iowa, although
the population has been drastically reduced. (Wolf. Oesterreich, 1/21/20)
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