Original air date: 26 October 2009

The timeline above shows how the programme progresses. Information about colours is the same as in starting programme.
* There is some strange inconsistency in this programme compared with zoology in general when talking about reindeer moving north in the Arctic tundra. As they are obviously moving freely these must surely be caribou and not the semi-domesticated reindeer (and continent, Eurasia vs America is not given). This part is not included in the companion book.
Selected material
The aye-aye digging for grubs

An aye-aye knocks on the tree bark and listens for the resonance to locate the grub inside (left). After gnawing the bark the animal uses its long middle finger to pick out the grub (right). What goes on is very hard to see even in the video in such darkness, let alone catching a few still frames. Picking out the blackness of the fingers surrounded by slightly not quite so dark surroundings and boxing them may deliver the magic of the sequence (9’25-10′).
A better version of this can be found 2’30 minutes into the more recent (2022) online at Smithsonian video