When it comes to hacking out a nest-hole, the birds adopt different tactics. By experimental tapping they find points at which trunks or branches are rotten and, therefore, suitable for excavation; then they bore and chip away as quietly as possible, so that they do not attract the attention of predators.
Spotted woodpeckers are small, slim birds, mottled black and white, and males have small crimson caps. Greater spotteds are only about 9in long, lesser spotteds less than 6in long. Green woodpeckers, their large cousins - both sexes of which are red-capped - do not drum territorially; but all three species share the same looping, undulating flight.Reuse content