Treecreepers favour trees with a rough bark and can be found almost anywhere on the estate where there are suitable trees. They start at the base of the trunk and work their way up the tree looking for food under the bark. They use their long curved beak to search in the cracks. They work their way round and round the trunk, so will disappear from view for a time. If you see a treecreeper, they will often be in a pose similar these. Look at the size of those claws, for gripping onto the bark. They can also be seen on the feeders at the bird hide, which is where this one was.