Western Gull - Webless Feet

While looking through some images of gulls I took at Boiler Bay a week ago from last Friday, I noticed that this one has no webbing between the toes of its feet. You can see a ridge of flesh along the inner sides of the toes were it appears the webbing should have attached.
The gull appears to be a Western. I did some internet research and could not find any mention of a gull without webbed feet or any irregularities. I assume this must be some type of genetic defect.
If anyone knows anything about what may have caused this, let me know.

Ancient Murrelet

While I didn't see the high number of ocean birds I had read reports of at Boiler Bay, I did manage to get shots of some Ancient Murrelet. At the time I didn't realize what they were as they were well off the coast. I can see where a high quality spotting scope would be a good thing to have for viewing off the coast.

Cornell's All About Birds website states that "It is the only seabird that raises its young entirely at sea."