Brown-headed Cowbird just hit window ,,,,bummer . Small Lake in Baytown
Township area. Most birds we have seen in years -- turkeys, pheasants ,
eagles , many types of owls , finches , many colorful songbirds , ran out of
bluebird houses, wood ducks , geese all over ..... Crazy ...
> On Apr 21, 2021, at 3:02 PM, Kim Wilcox
> <00001f18f49fc403-dmarc-requ...@lists.umn.edu> wrote:
>
> Thanks, Steve and Laura - that information is really helpful, especially
> the information on flock size.
>
> Kimerly J. Wilcox, Ph.D.
> *Retired*
>
>
>> On Wed, Apr 21, 2021 at 1:58 PM Laura Erickson <chickadee.erick...@gmail.com>
>> wrote:
>>
>> Although the pure white feathers are in all swans, with iron staining
>> environmentally controlled, I wonder if it still isn't much more common in
>> Trumpeters, which seem to spend more time in waters where they can pick up
>> the stain? At any rate. I'd never observed stained Tundra Swans over the
>> years when they were the only native swan I could see in Minnesota and
>> Wisconsin.
>>
>>> On Wed, Apr 21, 2021 at 11:42 AM Steve Weston <swesto...@gmail.com> wrote:
>>>
>>> The staining should be completely environmentally determined and not
>>> related to differences in species or species behavior. So, it should not
>> be
>>> a reliable way to differentiate the swan species. Better ways to
>>> differentiate the species beside field marks include calls and flock
>> size.
>>> Both species are quite vocal and Sibley mobile eBird guide plays
>>> vocalizations and will be right there when needed to compare calls.
>>> Trumpeters move about in family groups typically of 2 to 8 birds.
>>> Tudras migrate in flocks of 20 to 100. So if you see a smattering of
>> small
>>> groups of swans, they are probably Trumpeters and if you see a flock of
>> 20
>>> or more, they are probably Tudras. You can still see several family
>> groups
>>> of Trumpeters together or when out of peak migration a small group of 10
>> to
>>> 20 Tundras.
>>>
>>> Steve Weston
>>> On Quigley Lake in Eagan, MN
>>> swest...@comcast.net
>>>
>>>
>>> On Wed, Apr 21, 2021 at 12:44 AM Keith Carlson <keitheca...@gmail.com>
>>> wrote:
>>>
>>>> Can anybody tell me if coral or pinkish brown staining of the head is a
>>>> reliable way to distinguish tundra swans from trumpeter swans. Saw
>>> quite a
>>>> few with those colored heads on the wildlife drive at the Sherburne
>>>> National Wildlife Refuge last Saturday and I was guessing they were
>>> tundra
>>>> but was uncertain. They weren't very vocal so that didn't help.
>>>>
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>>>>
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>>>
>>
>>
>> --
>> Laura Erickson
>> Duluth, MN
>> she/her/hers
>>
>> For the love, understanding, and protection of birds
>> www.lauraerickson.com
>> www.patreon.com/lauraerickson
>>
>> You were made and set here to give voice to this, your own astonishment.
>> —Annie Dillard
>>
>> Please consider the environment before printing this e-mail.
>>
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>> During the pandemic, the MOU encourages you to stay safe, practice social
>> distancing, and continue to bird responsibly.
>>
>
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> During the pandemic, the MOU encourages you to stay safe, practice social
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