You have a twig with buds that are not in clusters.
Look at the shape of the buds.

Buds long and thin (at least twice as long as broad) Bird Cherry Hornbeam Beech Downy Birch (downy twig) Silver Birch (warty twig) Himalayan Birch Black Poplar Italian Poplar Click on the name to see which gives the best fit - use "Back" to return to this page. Click on a picture to enlarge it

Buds not more than twice as long as broad

(Click the box which matches your twig)