Squirrels cannot reach our bird feeder. Yet, birds can be sloppy eaters and frequently cause their food, black-oil sunflower seeds, to fall to the deck below. A resourceful squirrel can fetch one and spirit it away to one of its winter storehouses. Each day, the squirrel scampers back and forth between a storage place and beneath the bird feeder. Always, the squirrel carries but one seed at a time. It seems like endless work, but presumably it will pay off when there is snow on the ground.
A squirrel finds a black-oil sunflower seed. Beside it is the empty shell of a previous one.
The squirrel holds the oilseed. The shell casing is falling to the left.
Then putting the seed in its mouth, it rushes off to add the seed to its provisions. Strangely, the squirrel alway starts on its way first by leaping. 
Like the pics..and the starts with a leap observation…
Allan
Woodbury Village
It is interesting to learn the squirrel starts it’s task with a leap, shells the seed before storing and then takes only one seed at a time. I thought the squirrel would fill it’s cheeks with seeds (shelled or not?), like a chipmunk. At least, that is my concept of how a chipmunk acts.