Pipits in trees are usually tree pipits (Anthus trivialis), just like this one. They are very similar in appearance to the meadow pipit so their different calls and their preferred habitats are important in identifying them.
A summer visitor to our heathland, you can certainty see tree pipits in Wareham Forest at various locations and at Arne on Coombe Heath. They like open heath with a scattering of trees and bushes with a generous helping of bracken as they like to nest under bracken.
Pipits have a lovely display where they fly up in to the air in circles and then parachute down, wings open, 'pipiting' as they descend. With the tree pipit this is often back to the same tree perch they took off from.Tree Pipit: in free fall