All this while the Red-heads are full of gaiety. No sooner have they satisfied their hunger, than small parties of them assemble on the tops and branches of decayed trees, from which they chase different insects that are passing through the air, launching after them for eight or ten yards, at times performing the most singular manœuvres, and, on securing their victim, return to the tree, where, immediately after, a continued cry of exultation is uttered. They chase each other on wing in a very amicable manner, in long, beautifully curved sweeps, during which the remarkable variety of their plumage becomes conspicuous, and is highly pleasing to the eye. When passing from one tree to another, their flight resembles the motion of a great swing, and is performed by a single opening of the wings, descending at first, and rising towards the spot on which they are going to alight with ease, and in the most graceful manner. They move upwards, sidewise, or backwards, without apparent effort, but seldom with the head downwards, as Nuthatches and some smaller species of Woodpeckers are wont to do.
Their curving from one tree to another, in the manner just described, is frequently performed as if they intended to attack a bird of their own species; and it is amusing to see the activity with which the latter baffles his antagonist, as he scrambles sidewise round the tree with astonishing celerity, in the same manner in which one of these birds, suspecting a man armed with a gun, will keep winding round the trunk of a tree, until a good opportunity presents itself of sailing off to another. In this manner a man may follow from one tree to another over a whole field, without procuring a shot, unless he watches his opportunity and fires while the bird is on wing. On the ground, this species is by no means awkward, as it hops there with ease, and secures beetles which it had espied whilst on the fence or a tree.
It is seldom that a nest newly perforated by these birds is to be found, as they generally resort to those of preceding years, contenting themselves with working them a little deeper. These holes are found not only in every decaying tree, but often to the number of ten or a dozen in a single trunk, some just begun, others far advanced, and others ready to receive the eggs. The great number of these holes, thus left in different stages, depends upon the difficulties which the bird may experience in finishing them; for whenever it finds the wood hard and difficult to be bored, it tries another spot. So few green or living trees are perforated by this species, that I cannot at the present moment recollect having seen a single instance of such an occurrence.