branch branches cold holiday seasons snow snowing tree trees vacation white winter apple appletree blue fruit leaf leafs nature Nyberg red sky Australian raven bare bare branches blue black carrion eaters corvids corvus coronoides crow garbage collectors lone loud mournful omnivorous perched perching predators raven scavengers shiny black abstract appearance background bark bumps close-up colors colours cut-branches dry edge edges gray grey grooves layers lines patterned patterns perspectives ridges rough shape shaped shapes strange surface surfaced surfaces texture textured textures timber tree-trunk trunk twisted uneven unusual variations varieties wood ancient gnarled green gruen old olive Sardinia canopy leaves Rowan sun sunlight twig twigs