Only one command Flying Pigs (MC 1.8.1+)

/summon FallingSand ~ ~4 ~-0.1 {Time:1,Data:0,TileID:152,Riding:{id:FallingSand,Time:1,Block:minecraft:command_block,TileEntityData:{Command:fill ~ ~1 ~-1 ~ ~-5 ~ air},Riding:{id:FallingSand,Time:1,Data:0,TileID:1,Riding:{id:FallingSand,Time:1,Data:0,TileID:152,Riding:{id:FallingSand,Time:1,Block:minecraft:command_block,TileEntityData:{Command:kill @e[type=MinecartCommandBlock,r=4]},Riding:{id:FallingSand,Time:1,Data:0,TileID:1,Riding:{id:MinecartCommandBlock,Command:setblock ~ ~ ~ air,Riding:{id:MinecartCommandBlock,Command:/kill @e[type=Item,r=4],Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-3 ~-4 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-3 ~-3 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-3 ~-2 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-3 ~-4 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-3 ~-3 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-3 ~-2 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-3 ~-4 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-3 ~-3 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-3 ~-2 minecraft:grass 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-2 ~-4 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-2 ~-3 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-2 ~-2 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-2 ~-4 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-2 ~-3 minecraft:mob_spawner 0 replace {MaxNearbyEntities:6s,RequiredPlayerRange:16s,SpawnCount:4s,SpawnData:{HurtByTimestamp:0,Attributes:[{Base:10.0d,Name:\"generic.maxHealth\"},{Base:0.0d,Name:\"generic.knockbackResistance\"},{Base:0.25d,Name:\"generic.movementSpeed\"},{Base:16.0d,Modifiers:[{UUIDMost:-3567422668611694669l,UUIDLeast:-6034457002999464283l,Amount:0.0545418160605d,Operation:1,Name:\"Random spawn bonus\"}],Name:\"generic.followRange\"}],Invulnerable:0b,ForcedAge:0,AbsorptionAmount:0.0f,PortalCooldown:0,Saddle:0b,FallDistance:0.0f,InLove:0,DeathTime:0s,DropChances:[0.0850000008941f,0.0850000008941f,0.0850000008941f,0.0850000008941f,0.0850000008941f],PersistenceRequired:0b,HealF:10.0f,Age:0,Motion:[0.0d,-0.0784000015259d,0.0d],Leashed:0b,UUIDLeast:-7647497145828651555l,Health:10s,OnGround:1b,Dimension:0,Air:300s,Rotation:[-147.777694702f,0.0f],EntityId:\"Pig\",Riding:{HurtByTimestamp:0,Attributes:[{Base:6.0d,Name:\"generic.maxHealth\"},{Base:0.0d,Name:\"generic.knockbackResistance\"},{Base:0.699999988079d,Name:\"generic.movementSpeed\"},{Base:16.0d,Modifiers:[{UUIDMost:-1655146366253970155l,UUIDLeast:-8569651119614013017l,Amount:-0.0247069335115d,Operation:1,Name:\"Random spawn bonus\"}],Name:\"generic.followRange\"}],Invulnerable:0b,AbsorptionAmount:0.0f,PortalCooldown:0,FallDistance:0.0f,DeathTime:0s,DropChances:[0.0850000008941f,0.0850000008941f,0.0850000008941f,0.0850000008941f,0.0850000008941f],PersistenceRequired:0b,HealF:6.0f,id:\"Bat\",BatFlags:0b,Motion:[0.0d,-0.0124926310817d,-0.0312722788804d],Leashed:0b,UUIDLeast:-5885277476084895140l,Health:6s,OnGround:0b,Dimension:0,Air:300s,Rotation:[-124.500854492f,0.0f],Equipment:[{},{},{},{},{}],UUIDMost:-150485707358385899l,Pos:[-980.25d,4.80464595021d,654.405497538d],Fire:-1s,CanPickUpLoot:0b,HurtTime:0s,ActiveEffects:[{Duration:20000000,Id:14b,Amplifier:1b}]},Equipment:[{},{},{},{},{}],UUIDMost:-4769065522104152221l,Fire:-1s,CanPickUpLoot:0b,HurtTime:0s},MaxSpawnDelay:800s,Delay:198s,EntityId:\"Pig\",x:-39,y:56,z:-1203,id:\"MobSpawner\",SpawnRange:4s,MinSpawnDelay:200s,SpawnPotentials:[{Type:\"Pig\",Properties:{HurtByTimestamp:0,Attributes:[{Base:10.0d,Name:\"generic.maxHealth\"},{Base:0.0d,Name:\"generic.knockbackResistance\"},{Base:0.25d,Name:\"generic.movementSpeed\"},{Base:16.0d,Modifiers:[{UUIDMost:-3567422668611694669l,UUIDLeast:-6034457002999464283l,Amount:0.0545418160605d,Operation:1,Name:\"Random spawn bonus\"}],Name:\"generic.followRange\"}],Invulnerable:0b,ForcedAge:0,AbsorptionAmount:0.0f,PortalCooldown:0,Saddle:0b,FallDistance:0.0f,InLove:0,DeathTime:0s,DropChances:[0.0850000008941f,0.0850000008941f,0.0850000008941f,0.0850000008941f,0.0850000008941f],PersistenceRequired:0b,HealF:10.0f,Age:0,Motion:[0.0d,-0.0784000015259d,0.0d],Leashed:0b,UUIDLeast:-7647497145828651555l,Health:10s,OnGround:1b,Dimension:0,Air:300s,Rotation:[-147.777694702f,0.0f],EntityId:\"Pig\",Riding:{HurtByTimestamp:0,Attributes:[{Base:6.0d,Name:\"generic.maxHealth\"},{Base:0.0d,Name:\"generic.knockbackResistance\"},{Base:0.699999988079d,Name:\"generic.movementSpeed\"},{Base:16.0d,Modifiers:[{UUIDMost:-1655146366253970155l,UUIDLeast:-8569651119614013017l,Amount:-0.0247069335115d,Operation:1,Name:\"Random spawn bonus\"}],Name:\"generic.followRange\"}],Invulnerable:0b,AbsorptionAmount:0.0f,PortalCooldown:0,FallDistance:0.0f,DeathTime:0s,DropChances:[0.0850000008941f,0.0850000008941f,0.0850000008941f,0.0850000008941f,0.0850000008941f],PersistenceRequired:0b,HealF:6.0f,id:\"Bat\",BatFlags:0b,Motion:[0.0d,-0.0124926310817d,-0.0312722788804d],Leashed:0b,UUIDLeast:-5885277476084895140l,Health:6s,OnGround:0b,Dimension:0,Air:300s,Rotation:[-124.500854492f,0.0f],Equipment:[{},{},{},{},{}],UUIDMost:-150485707358385899l,Pos:[-980.25d,4.80464595021d,654.405497538d],Fire:-1s,CanPickUpLoot:0b,HurtTime:0s,ActiveEffects:[{Duration:20000000,Id:14b,Amplifier:1b}]},Equipment:[{},{},{},{},{}],UUIDMost:-4769065522104152221l,Fire:-1s,CanPickUpLoot:0b,HurtTime:0s},Weight:1}]}",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-2 ~-2 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-2 ~-4 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-2 ~-3 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-2 ~-2 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-1 ~-4 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-1 ~-3 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~2 ~-1 ~-2 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-1 ~-4 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-1 ~-3 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~3 ~-1 ~-2 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-1 ~-4 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-1 ~-3 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:"setblock ~4 ~-1 ~-2 minecraft:air 0 replace",Riding:{id:MinecartCommandBlock,Command:buffer,Riding:{id:FallingSand,Time:1,Data:0,TileID:157,Riding:{id:FallingSand,Time:1,Data:0,TileID:152,Riding:{id:Item,Age:5996,Motion:[0.0,0.0,-0.1]}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}