Gray-bellied Brent Goose (Intergrade)
Gray-bellied Brent Goose (Intergrade)
-
Not yet spotted on Fladder
Spotted
The Gray-bellied Brent Goose represents an intergrade form, primarily found where the breeding ranges of the Dark-bellied Brent Goose and Black Brant overlap, resulting in birds with intermediate plumage.
Where to spot
Most commonly observed in wintering grounds where both parental subspecies occur, particularly along the Pacific coast of North America and occasionally in Western Europe, reflecting their mixed Arctic breeding origins.
How to spot
Identification requires careful observation. Look for a belly color that is distinctly lighter than a Black Brant but darker than a Pale-bellied Brent Goose, appearing a medium grey. The white neck patches may also show intermediate characteristics.
When to spot
Similar to other Brent Geese, the best observation periods are during the non-breeding season from late autumn through early spring (October-April) when they are in their wintering areas.
Where to spot
Most commonly observed in wintering grounds where both parental subspecies occur, particularly along the Pacific coast of North America and occasionally in Western Europe, reflecting their mixed Arctic breeding origins.
How to spot
Identification requires careful observation. Look for a belly color that is distinctly lighter than a Black Brant but darker than a Pale-bellied Brent Goose, appearing a medium grey. The white neck patches may also show intermediate characteristics.
When to spot
Similar to other Brent Geese, the best observation periods are during the non-breeding season from late autumn through early spring (October-April) when they are in their wintering areas.
These intergrades offer a fascinating glimpse into avian evolution, demonstrating how gene flow can create a spectrum of appearances between distinct populations.
Loading...
Spotted
No recently spotted birds
No observations
Loading...
Nothing spotted yet
Share this page
Or share directly on
