Monday, April 17, 2017

Trumpeter Swan

I find myself slipping behind with blog posts—a good situation, I suppose. Erika and I took this Trumpeter Swan photo on 7 April at the Bass Ponds in the Minnesota Valley National Wildlife Refuge in semi-urban Bloomington, Minnesota. Who knew that swans can make bubbles with their necks?

Trumpeter Swans were reintroduced to our region beginning in the 1960s.  They are now fairly common. Not all swans show such rusty heads and necks. This stain is caused by iron-rich water and mud (Mitchell and Eichhotz 2010).

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