On land, the passing of the seasons is marked in many ways. Here's a small selection of things you might notice among the UK's flora and fauna as the year progresses.
Spring Toads take to the road, heading for breeding grounds Queen bees emerge from winter hibernation Yellow flowers are a sure sign of spring March hares get a reputation for mad behaviour.
Many birds are building nests, including mute swans
Insects are plentiful. Brimstone butterflies appear in April
Autumn Berries appear in hedgerows and gardens
Trees shed their leaves and provide shelter for myriad insects Spiders webs are easy to see when covered with autumn dew
Pink-footed and barnacle geese fly in from cooler climes
Mammals prepare for winter hibernation
Winter
Mute swans are joined by whoopers and Bewicks that arrive for the winter Foxes are particularly vocal during the winter breeding season
As foliage disappears, look out for lichen that can survive the cold weather
Landscapes look like Christmas card scenes when the first frosts take hold. Snowdrops are the first flowers to appear.