Otter (Lutra lutra)
Otters are semi aquatic mammals from the same family as the weasel.
They can grow up to 80cm and are specially adapted for swimming. They are able to close their ears and nose underwater, have webbed feet and thick fur to keep them warm.
Otters are a protected species and have recently re-established themselves along many Essex rivers, including the River Colne in north Essex.
Magpie (Pica Pica)
Magpies are common birds across the UK. They are known as scavengers and frequently collect brightly coloured and shiny objects.
Fun fact - the collective noun for a group of magpies is a parliament!
Listen to a magpie.