animal black butterfly flower groningen hibiscus insect jungle nature tropical vector white bird bird house brown green icy snow sparrow Spruce Tree winter birds blue clouds gray horizon ocean sand sky summer Tan water art black and white design drawing fold folded graphic ink paper small Bengal-tiger-variant big-cat breeding carnivore color colored colorful colors colour coloured colourful colours conservation contrast critically-endangered distinct distinctive felid hunter mammal movement moving pacing panthera-tigris protected protective prowling reclining rehabilitation relaxed relaxing resting Singapore-zoo striped sub-species swimmer tiger white-tigers wildlife zoo autumn fall forest forest flor fungus grass log toadstool