Grey-headed Woodpecker, Picus canus, looking up and down then pecking in a hole of a fallen tree on the forest ground

greyheaded woodpecker piciformes woodpecker bird photography woodpeckers of thailand beak birdlife biodiversity picidae foraging bird greyheaded picus canus ornithology streakeared bulbul pecking feeding peckers wildlife conservation wildlife filming woodland birds for birdwatchers birds birdwatching pecked forage trunk natural habitat environment burrow feathers nature picus ecosystem feather feed natural jungle worms national parks forest ground forest grounds twitching beautiful wild wood afternoon