IButterfly butterfly = PluginLepidopterology.butterflyInterface.getMember(entityItem.getEntityItem());
if(butterfly == null)
return false;
if(!butterfly.canTakeFlight(entityItem.worldObj, entityItem.posX, entityItem.posY, entityItem.posZ))
return false;
if(entityItem.worldObj.countEntities(EntityButterfly.class) > PluginLepidopterology.entityConstraint)
return false;