The Nuthatch, also called the Eurasian Nuthatch (a corruption of its old name nut-hack), has a kingfisher shape with long beak and short tail. It also has a blue (blue-grey rather than turquoise) back and russet front (the western Eurasian adult has a russet front; juveniles and the Siberian race have a pale whitish front). It has a black eye-stripe from shoulder to beak making the beak look extended and a white chin. The Nuthatch is usually seen upside down (or the right way up if you're a nuthatch) and usually walks head first down tree trunks.
Nuthatch pairs are rarely seen together; usually one will eat first, followed by the other after.
Like a Jay or Squirrel, the Nuthatch will take several nuts and hide them in various places.