Grey Wagtail Bird Feeding on Fast Flowing Stream Bank and Scratches Head With Leg

grey wagtail itching scratch motacilla cinerea leg bird feed wag tail head stream brook eat peck bill beak grey yellow plumage feather wing one animal wild wildlife closeup river bank south korea walk nature rock gray grooming close up birdlife ornithology quick slow motion shake tail water colourful lone feathers behavior stone groom creek running water