abstract appearance backgrounds bare bark brown bumps close-up colors colours cracked cracks dead dry edge edges gnarled gray grey grooves layers lines moss mottled patterns peeling ridges rough shades of colour shapes smooth strips Stump sunlight surface surfaces texture textured textures tree Tree Stump tree trunk trunk uneven variations wallpaper wood angles art artistic backdrop background blended circles cushioned decoration decorative depth design detailed folds foliage green greens image images interconnected intermeshed interwoven intricate intricate patterns kaleidoscopic patterns light mandalas perspectives pink points pulsating radiating red soft starbursts style turnips vibrant white contrast dark lined shade shades-of-colour shadows tree-trunk wrinkled wrinkles wrinkly varieties arty black blue color colored colour coloured cream detailed patterns geometric geometrical mandala sharp vibrancy birds breadcrumbs buff Camouflage camouflaged climate-tolerant common common-pest ever-expanding populations fauna house sparrows insect-eaters introduced-species Matthew 10:29 Old-World-sparrows passer domesticus passerine-birds pest plump powerful-beaks prolific seed-eaters small social sparrow sparrows true-sparrows two-a-penny worldwide-distribution