Great Spotted Woodpecker (Dendrocopos major) - is one of the ten most common woodpeckers in Poland. It lives in forest areas, parks and gardens, and often visits feeders in winter. Its menu consists of insect larvae and seeds of conifers. The great woodpecker has also been observed eating ants, as has the green woodpecker. He does not despise nuts, which he cleaves efficiently in a prepared forge. This omnivorous predator sometimes eats bird eggs or chicks. Its strong beak and efficient movement through trees enable it to forge a new hollow in a living tree each year when it breeds. The used hollows left by the great woodpeckers constitute breeding places for other birds, therefore the great woodpecker is a key species for the existence of other species in the environment.