Strange birds.

This morning, at about 9:30, I was out in my back yard with Cojack. There was not a cloud in the azure-blue sky. I happened to look up into the sky just in time to see a puzzling sight. There were three very large birds flying in a tight V formation on a heading that was maybe 5 degrees north of due west. I would estimate that they were up at the same altitude where you normally see flights of Canada geese that are flying over bound for points far farther south than here. I'm very familiar with what Canada geese look like at various altitudes. These birds appeared to have a different length to width ratio in their bodies. They seemed to be shorter and broader in the breast than Canadas. They could have had 5 to 7 pounds on a Canada goose. They were uniformly tan in the underparts of their wings, bodies, and tails. The most peculiar thing was the position of their wings in flight. Picture a bird with its wings fully outstretched. Now, picture what happens, in slow motion, as a bird folds its wing. Picture it at the halfway point between fully extended and fully folded. That's how these birds wings were configured in flight. And they were constantly flapping - no gliding for these heavyweights. The V formation says waterfowl. The heading, given the time of year, is a puzzlement though. Anyone have any ideas? Something way off course from Africa occurs to me.