There are several subspecies of Canada geese. The subspecies with white mark on its forehead is normally found west of the Rocky Mountains and is smaller than the Canada geese normally seen in Florida. This was the only one I saw with the mark and I dubbed him "White-Eyebrows". He and his mate and their five goslings visited the pond on a regular basis and loved the rice cakes I put on the other side of the fence for them. They could be in the water, but as soon as I would call, "White-Eyebrows" they would run up the hillside to the edge of the fence. All except the last photo are from 2014. I did not see him in 2015, but I did see a goose that might have been one of his offspring.
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Canada geese in Florida normally only have a white diagonal patch on the sides of their heads. This one had an additional white patch between its eyes.
Here he is taking a snooze. All Canada geese have white eyelids.
One of his five goslings seemed to have a yellower/lighter forehead.
As this gosling and its siblings matured, the forehead remained a lighter hue.
This spliced photo has White-Eyebrows on the left and Mrs. White-Eyebrows and the light-forehead gosling swimming behind her on the right.
Mrs. White-Eyebrows (lower left) and her five goslings. Even as their dark patches turn black, the one gosling appears it will have its father's mark.
A month later the light patch seems to be filling in.
(I left town the next day so I don't know the final result.)
In early December of 2015 I saw this goose in with a group of geese with completely black foreheads. After comparing markings I believe this is a different goose from the prior photo. However, it could be one of White-Eyebrows's offspring from a year other than 2014. There is some white near each eye on this bird (rather than all the way across). It's plucking an acorn from the leaves.
During summer 2016, I saw a family of growing geese with multiple young ones with white patches even though both parents had completely dark foreheads. Apparently the gene(s) producing this coloration can skip generations. Here are several goslings from this family group.
All photos © S. M. Garver