Ambient entities

Ambient entities are objects that appear and move around in the background, and cannot be interacted with in any way. They are displayed depending on the time of day, biome, and weather. While some can be seen regularly, others are only displayed rarely. Clouds can be considered background entities although they are not affected by biomes. Ambient entities' motion speeds up with time.
== List of ambient entities ==
Entity 	Image	Display condition
Meteor 	 	Shortly prior to a meteor crash
Birds 	 	Forest and Hallow during the day
Wyvern 	 	Hardmode during the day
Airship 	 	Windy Day
Air Balloon 	 	Forest and Hallow during the day
Balloons 	 	Party
Eye of Cthulhu 	 	Night
Butterfly swarm 	 	Forest and Hallow during the day, based on the spawn rate of butterflies that day.
Lost Kite 	 	Windy Day
Vulture 	 	Desert during the day
Bat 	 	Jungle during the night in large swarms
Pixie posse 	 	Hallow
Seagull 	 	Ocean during the day
Slime Balloon 	 	Windy Day in swarms
Gastropod 	 	Hallow during the night in swarms
Winged Unicorn 	 	Hallow during the day
Eater of Souls 	 	Corruption
Crimera 	 	Crimson
Hellbat 	 	Underworld in large swarms
Bone Serpent 	 	Underworld
Release Lanterns	 	Lantern Night
Falling Slimes 	 	Slime Rain
Martian Saucer 	 	Martian Madness
== List of clouds ==
=== Normal clouds ===
File:Regular cloud 1.png|Regular 1
File:Regular cloud 2.png|Regular 2
File:Regular cloud 3.png|Regular 3
File:Regular cloud 4.png|Regular 4
File:Cirrocumulus cloud 1.png| 1
File:Cirrocumulus cloud 2.png|Cirrocumulus 2
File:Cirrocumulus cloud 3.png|Cirrocumulus 3
File:Cirrocumulus cloud 4.png|Cirrocumulus 4
File:Cirrocumulus cloud 5.png|Cirrocumulus 5
File:Cirrus cloud 1.png| 1
File:Cirrus cloud 2.png|Cirrus 2
File:Cirrus cloud 3.png|Cirrus 3
File:Cirrus cloud 4.png|Cirrus 4
File:Cirrus cloud 5.png|Cirrus 5
File:Cummulus cloud 1.png| 1
File:Cummulus cloud 2.png|Cumulus 2
File:Cummulus cloud 3.png|Cumulus 3
File:Cummulus cloud 4.png|Cumulus 4
File:Cumulonimbus cloud 1.png| 1
File:Cumulonimbus cloud 2.png|Cumulonimbus 2
File:Cumulonimbus cloud 3.png|Cumulonimbus 3
File:Cumulonimbus cloud 4.png|Cumulonimbus 4
=== Rare clouds ===
Every time a cloud is displayed, there is a chance it will instead be one of these rare clouds.
File:Bunny cloud.png|Bunny
File:Eater of Souls cloud.png|Eater of Souls
File:Eye of Cthulhu cloud.png|Eye of Cthulhu
File:Eye of Cthulhu second form cloud.png|Eye of Cthulhu's second form
File:Goldfish cloud.png|Goldfish
File:Redigit cloud.png|Redigit
File:Heart cloud.png|Heart
File:Pumpking cloud.png|Pumpking
File:Skeletron cloud.png|Skeletron
File:Star cloud.png|Star
File:Sword cloud.png|Sword
File:Tree cloud.png|Tree
File:Wyvern cloud.png|Wyvern
File:Brain of Cthulhu cloud.png|Brain of Cthulhu
File:Bird cloud.png|Bird
File:Wilson cloud.png| (Don't Starve)
File:Willow cloud.png| (Don't Starve)
File:Maxwell cloud.png| (Don't Starve)
File:Charlie cloud.png| (Don't Starve)
== Notes ==
* The Meteor ambient entity will only be displayed if the condition for the meteorite biome to spawn was fulfilled between dusk and 11:40PM, which includes the random chance each night. It will always start falling in the background at 11:40PM.
** Even if circumstances would prevent meteorite landings (i.e., no new meteorite biome would actually be generated), the background meteor will still appear when the conditions are fulfilled.
== Trivia ==
* The bats more accurately represent the bats from the Bat Scepter rather than the bat enemy.
== References ==