Definition
"Picus" is a genus of woodpeckers, specifically those found in the Old World. These birds are typically medium-sized and known for their green plumage. They use their strong bills to excavate wood in search of insects and to create nesting cavities. They have adaptations like zygodactyl feet for climbing and stiff tail feathers for support. Their drumming behavior is a common way to communicate and establish territory. They are an important part of the forest ecosystem.