aviary
Cheats recipe will guide you to the creation of aviary from starting items.
How to make aviary in Little Alchemy 2?
water + 
earth = 
mud
fire + mud = 
brick- brick + brick =
wall - earth + earth =
land - water + water =
puddle - water + puddle =
pond - water + pond =
lake - water + lake =
sea - fire + earth =
lava - lava + sea =
primordial soup - earth + lava =
volcano - volcano + primordial soup =
life - life + land =
animal - land + land =
continent - continent + continent =
planet 
air + planet = 
atmosphere- fire + planet =
sun - sun + atmosphere =
sky - sky + animal =
bird - bird + wall =
birdcage - fire + fire =
energy - energy + sun =
solar cell - sun + solar cell =
electricity - air + air =
pressure - earth + pressure =
stone - air + stone =
sand - fire + sand =
glass - glass + electricity =
light bulb - mud + stone =
clay - life + clay =
human - human + light bulb =
idea - human + idea =
philosophy - planet + planet =
solar system - solar system + solar system =
galaxy - galaxy + galaxy =
galaxy cluster - galaxy cluster + galaxy cluster =
universe - universe + philosophy =
big - big + birdcage = aviary