Harvesting pecans

We won't be harvesting any of the pecans from the trees in our yard. I found this interesting article about the pecan tree and after reading about the ability of one squirrel to eat the entire harvest of two pecan trees, I went outside and looked up into our trees. They are bare of nuts. I remember that a few weeks ago we had a lot of squirrels around, and lately we've seen none. I guess they got all our pecans and moved on.