WHAT KIND OF BIRCH?

WHAT KIND OF BIRCH?

Observation - WHAT KIND OF BIRCH? - UK and Ireland. Description: Plump catkins - vary in length between half an inch and an inch long. The ones in the top picture are at the yellow end of green. They open and go brown - see examples in the third picture along with individual leaves. The leaves are up to three

Plump catkins - vary in length between half an inch and an inch long.

The ones in the top picture are at the yellow end of green.

They open and go brown - see examples in the third picture along with individual leaves.

The leaves are up to three inches in length but mostly smaller.

On tree which has shiny red bark with white flecks. (Middle picture.)

Because the base of the tree is in a dip, I can't get to its foot or tell how tall it is. I am seeing only its top. There are three trees together, possibly four, so I don't know what shape top a tree on its own would have.

Beside what used to be a railway line near the sea.

The first photo (of catkins on the tree) was taken on June 20th 2011. The other two on 7th July.