Trumpeter Swans at LaSalle Park:

Trumpeter Swans breed on wetlands in Alaska, Canada and the NW United States. They winter on ice-free coastal and inland waters. The harbour at LaSalle Park near Burlington is perfectly situated to provide winter shelter from the cold winds. There is a beach where they can rest and an abundance of aquatic plants for eating. The water is shallow enough near shore for them to tip to feed as they aren't divers. 

https://hnpnc.com/site/trumpeter-swans-at-lasalle-park

The bill of a Trumpeter Swan is almost 11 cm long, making it the largest bill size of all waterfowl species. (Tundra swans have a bill length averaging only 4.2 cm.) The shape of the head forms a slope that is continuous with the bill, almost forming a straight line. They are our biggest native waterfowl, stretching to 6 feet in length and weighing more than 25 pounds, almost twice as massive as a Tundra Swan!  

https://www.allaboutbirds.org/guide/Trumpeter_Swan/overview

The point where the bill is attached to the face looks like a 'V' in Trumpeter Swans. (The letter 'U' appears for a Tundra Swan.)

https://www.allaboutbirds.org/guide/Trumpeter_Swan/overview

Starting in the 1600's, market hunters and feather collectors had decimated Trumpeter Swan populations. The species has now expanded their range as they continue their comeback from near extinction. 

https://www.allaboutbirds.org/guide/Trumpeter_Swan/overview

A young Trumpeter Swan takes time for a big yawn!