Early Sign of Spring

One of the earliest signs of Spring is the hazel tree, which just now is covered in catkins. The hazels round here have had catkins for over a week now, but my previous attempts at photos have failed for some reason!

In the photo below, if you look carefully (click on the photo to make it bigger!) you can see the tiny red female flower (on upper side of the upper branch to the right of the catkins)

The birds are very active too and calling to each other loudly. Only the robins are properly singing as yet (though song thrushes, mistle thrushes and wrens all sometimes sing this early in the year).

What early signs of Spring are you seeing at the moment?