Nesting Red-necked Grebes

Today I visited Colonel Smith Samuel Park in Toronto, Canada to check up on some Red-necked Grebes I have been observing this summer. There I saw the breeding pair I always watch in the harbour. This year they arrived late, but still managed to have two clutches. They laid four eggs late July, and the eggs just finished hatching. They may very soon migrate for the winter.

Red-necked Grebe feeding nestling.

The parents were carrying their nestlings on their back (usual grebe behaviour) in between the wings to keep them warm. A few days ago, when only one chick hatched, that nestling would sit on the back of the incubating parent, while the other adult grebe would go find small fish to feed to the nestling. The roles of the parents often switched so that the one fishing for food could have the chance to rest.

I am very curious as to why they are having a clutch so late. They are actually supposed to leave for the Atlantic coast from around late August to October, and although this is not considered to be a long migration, what are the grebes going to do with their nestlings that can only fly from 50-70 days after hatching? Of course, some grebes in southern Ontario choose not to migrate, however winter here is a hardship.

I will keep posted on this family of grebes, to see whether they have chosen to stay, or try to squeeze in the flight before winter. Many other grebes in the harbour have already left.