Wildcat kittens born outside captivity in Cairngorms a ‘major milestone’

Adult cats were released into national park last year after British population had come close to extinction

The birth of wildcat kittens in the Cairngorms national park has been hailed as a major milestone" in efforts to rescue the secretive mammals from extinction in the UK.

In footage exclusively shared with the Guardian by the Royal Zoological Society of Scotland (RZSS), two of the kittens can be seen playing in grassland with their mother and leaping on to a fallen tree branch.