Autumnwatch returns for an eight week celebration of UK wildlife.

From the BBC Natural History Unit in Bristol, Chris Packham and Kate Humble share their adventures of the last few days on a wild side of London where red deer rut and peregrine falcons hunt.

Wildlife cameraman Charlie Hamilton-James is on the trail of an otter and her cubs in Shetland, while Martin Hughes-Games is tracking down your wildlife stories, which include badgers living in the heart of the city.

Autumnwatch returns for a celebration of UK wildlife.

Chris Packham and Kate Humble are on a mission to track down one of the UK's biggest autumn wildlife spectacles - vast flocks of roosting starlings. Using cutting-edge technology, the team uncover the secret of their stunning aerial displays, and try to get inside the roost. Across the country, wildlife is massing in vast numbers, and there is a guide to the top spectacles of the season.

Meanwhile in Wales, guest presenter Iolo Williams reveals the surprising and mysterious life of the region's most iconic fish, the sea trout.