beak bird branch dive feather fisher hunter Kingfisher pied water beach copy copyspace fly lake reflection seagull space birds flying horizon ocean panic sand seagulls view black groningen Heron illustration nature silhouette vector white chalk cliff cliffs cormorants England erode eroded erosion gull gulls layer layers sea stack Sussex wave duck feathers grass reflections whisteling duck white faced close-up Denmark female summer wet adult-bird aquatic black-winged-stilt cautious distance distant dog-bird himantopus himantopus large long-legged longshanks mature pied-stilt protective shore shore-bird shore-line stilt territorial wader wading wading-bird water-bird white-headed-stilt widespread young