Great spotted woodpecker male bird perched on old tree log looking for food pecking bark with bill

great spotted woodpecker dendrocopos major male peck hole rotten log tree log decayed close up slow motion one bird animal forage alerted looking wildlife south korea crimson patch nape sunlight forest beak spotted great woodpecker avian bark bill detail feed ornithology plumage red wild wood perched pecker hungry drilling behaviour cavity behavior drill insects seoul forest fauna closeup