The first flocks of winter wader birds have landed at the Wildfowl and Wetlands Trust at Welney in Norfolk.
Hundreds of Black-tailed Godwits can now be seen across the Ouse Washes as they take refuge from colder climates.
They've flown more than one thousand miles from Iceland to escape winter there and have come to Norfolk where it is warmer.
Murmurations of the Black-tailed Godwits can be seen across the Fenland landscape and as they move they shimmer in the sunlight.
Food is in abundance here for these birds and because of the milder winter there is plenty to eat and it's easy to get hold of.
But if the weather turns cold quickly and they can't feed, then the birds will move on further west and towards coastal areas.