Grab A Few Coffees,

for this video,

it is about how determined squirrels are to get at the nuts on a bird table, and how the ingenuity of Mark Rober tries to stop them, after taking up bird watching as a hobby, it was not long before the squirrels had learnt how to help themselves, so let the game commence as he tries to outwit the squirrels, the first part of the video is about how he built the course, but you can skip to 7:40 and see squirrels trying to negotiate the course from that point on, via Gizmodo, it makes the route one of the squirrels that visits us on our first floor window look so easy!