Thanks for the great swan information Tom.
His post is a perfect example of how informative & valuable this listserv
can be. We learned a ton about swan migration in just a few paragraphs.
Thanks!!!
Good birding.
Ken & Barb Wardius
Glendale, Milwaukee County
-----Original Message-----
From: wisbirdn-bounce@xxxxxxxxxxxxx [mailto:wisbirdn-bounce@xxxxxxxxxxxxx]
On Behalf Of Thomas Erdman
Sent: Thursday, November 18, 2021 9:06 AM
To: loonp@xxxxxxxxxxx; bduerksen@xxxxxxx; wisbirdn@xxxxxxxxxxxxx
Subject: [wisb] Re: Tundra Swans
Kurt, Swan migration is later because they are nesting further to the
northwest than Canada Geese. Our swan's nest along the coast into eastern
Alaska, through Yukon and Northwest Territories to Nunavut and west shore of
Hudson Bay. In recent decades they have returned to Hudson and James Bays
where they were eliminated in the fur -swan skin trade in 1800's. the
autumn migration more or less follows the same route as the spring migration
with birds moving south through Alberta, Saskatchewan, Manitoba, to eastern
Dakotas, then east to MN and WI heading to the middle Atlantic coast for
the winter. The swans are traveling further than the geese. The Canadian
Canada Geese are mostly dropping straight south into Wisconsin. The Canada
Geese use to winter to the Gulf states, but the proliferation of Federal and
State Refuges along the Mississippi has short stopped that migration.
Historically there was a Tundra swan migration to Texas coast (days of
Audubon). That may have been the
Hudson Bay population that was decimated in the fur trade era. The swan
migration was historically very narrow as the birds relied on aquatic
vegetation for forage. In the 1970's swans wintering on Chesapeake Bay began
flying inland along with the geese and Mallards to feed on harvested corn
and grain fields. That forage switch has been added to the migration route,
greatly expanding it.
This last weather system is a strong one and I would expect a good movement
into Wisconsin in following days of west and northwest winds. Swans pay
attention to strong tail winds and even have been known to take off in the
middle of night if the winds shift to a favorable condition. In one case
when swans had been tracked to northern MN from Maryland, the birds left
after midnight and the single engine fixed-wing aircraft could not keep up
with the migrant birds heading towards the breeding grounds.
Still no Tundra birds along the Bayshore, Little Suamico to Oconto.
Tom Erdman
-----Original Message-----
From: wisbirdn-bounce@xxxxxxxxxxxxx <wisbirdn-bounce@xxxxxxxxxxxxx> On
Behalf Of K P
Sent: Wednesday, November 17, 2021 1:26 PM
To: bduerksen@xxxxxxx; wisbirdn@xxxxxxxxxxxxx
Subject: [wisb] Re: Tundra Swans Richland County
I just love seeing the swans come through on their migrations this time of
year. Actually, if they are airborne, I usually hear them before I see them.
We saw a handful at Horicon Marsh - Hwy 49 - this past Sunday.
Does anyone know why the swan migration is generally much later than say,
Canada geese?
Kurt Petersen
Sheboygan County
-----Original Message-----
From: wisbirdn-bounce@xxxxxxxxxxxxx <wisbirdn-bounce@xxxxxxxxxxxxx> On
Behalf Of Barbara Duerksen
Sent: Wednesday, November 17, 2021 11:03 AM
To: wisbirdn@xxxxxxxxxxxxx
Subject: [wisb] Tundra Swans Richland County
I heard and saw 3 flocks of Tundra Swans fly over earlier this morning.
Barbara Duerksen
Richland County
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