This video from the USA says about itself:
9 December 2016
Gray Squirrels bury nuts as fast as they can – a true nut burying frenzy – as I spend some quality time handing them large ripe acorns given by a friend. The Backyard has no acorns this time of year (water oaks) while they are falling in piles in other areas of Florida with small live oaks. Rather than eating them as I expected, the squirrels seem in a great rush to bury them as fast as possible – many they will not find again. Maybe it is going to get cold this winter! You will also hear the calls of Gray Catbirds and Northern Cardinals in the background at various times.