Immature Bald Eagle in flight. Photo by Jamie Simo

Milavec Reservoir, January 8th–with Jamie Simo

Hybrid Greater White-fronted Goose x Cackling Goose. Photo by Jamie Simo.

Milavec Reservoir in Frederick, Colorado is always a good place to see ducks and geese in the winter. I like to go at least once every year to see what I can see. This past Saturday was cold and windy and because of that a lot of the reservoir was frozen, but just enough remained open that it drew some interesting waterfowl and even some hungry raptors,

Hybrid Snow Goose x Cackling/Canada Goose. Photo by Jamie Simo.

including 4 Bald Eagles and a Northern Harrier.

Hiding among the masses of Canada and Cackling Geese were a Greater White-fronted Goose and a couple of interesting hybrids. One of these hybrids was clearly a cross between a Greater White-fronted Goose and probably a Cackling Goose going by the bright orange beak and feet (indicative of a Greater White-fronted Goose) and the dark  head and neck with a paler cheek patch (indicative of either a Canada or Cackling Goose). It’s small size hints that the other parent was probably a Cackling Goose rather than a Canada Goose.

The other hybrid was a lot harder to pin down to parentage. The white, blotchy head points to either a Snow Goose or a Ross’s Goose parent with the blocky head shape being more of a Snow Goose than Ross’s Goose trait. The dark bill and dark body indicates the other parent was either a Cackling or a Canada Goose.

We also had some great diving ducks, including good looks at both male and female Canvasbacks. The “ski slope” head shape of the Canvasback is distinctive and makes it unique from our other duck species. The Canvasback is named for the male’s white body, which resembles the color of unpainted canvas. The highlight for me was the lone Red-breasted Merganser that helpfully hung out next to a male Common Merganser to give a good indication of its slightly smaller size. This merganser had dark patches on the face, which I suspect would’ve been green feathers coming in if we’d been able to get closer to it. Immature male Red-breasted Mergansers resemble females with their brown heads and grey bodies. Mature males have green heads.

Red-breasted Merganser. Photo by Jamie Simo.

If you get a chance, check out Milavec this winter. I doubt you’ll be disappointed whatever you end up seeing!

Milavec Reservoir

20 taxa

Greater White-fronted Goose 1
Greater White-fronted x Cackling Goose (hybrid) 1
Snow x Canada Goose (hybrid) 1
Cackling/Canada Goose 2500
Northern Shoveler 16
Mallard 27
Canvasback 19
Lesser Scaup 1
Common Goldeneye 23
Common Merganser 21
Red-breasted Merganser 1
Rock Pigeon (Feral Pigeon) 5
Ring-billed Gull 2
Northern Harrier 1
Bald Eagle 4
Northern Flicker 1
Blue Jay 1
American Crow 6
Black-capped Chickadee 1
House Finch 7

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