Nikondork chickens

/summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:/fill ~ ~0 ~1 ~ ~-8 ~1 redstone_block},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~ ~3 ~1 stone},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~ ~4 ~ command_block 0 replace {Command:fill ~ ~2 ~ ~ ~-12 ~1 air}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~3 ~-5 ~-1 command_block 0 replace {Command:/execute @e[type=Chicken,name=Nikondork,score_nik=0] ~ ~ ~ particle smoke ~ ~ ~ 0 0 0 1 10}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:setblock ~3 ~-4 ~1 command_block 0 replace {Command:}},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:gamerule commandBlockOutput false},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:"fill ~2 ~-2 ~ ~3 ~-2 ~ redstone_block"},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:"setblock ~2 ~-1 ~-1 command_block 0 replace {Command:/fill ~ ~ ~1 ~2 ~ ~1 stone 0 replace redstone_block}"},Time:1,Riding:{id:"FallingSand",Block:command_block,TileEntityData:{Command:"setblock ~2 ~ ~1 command_block 0 replace {Command:/fill ~ ~ ~-1 ~2 ~ ~-1 redstone_block 0 replace stone}"},Time:1,Riding:{id:"FallingSand",Block:stone,Time:1}}}}}}}}}}}