Ostriches are birds. Ostriches can spawn through egg and randomly like other animals. Ostriches run fast when you attack it, but do not fly away. It drops 1-4 Raw Bird and 2-7 Feather after being killed. It can be killed by 2-3 hit of diamond edge machete, diamond arrow, or diamond sword. Diamond pick axes can be used but are not recommended for killing it as well as the spear. Bow and arrows, with diamond arrow can kill it with 1 hit, and are recommended. It's not a rare animal and it's easy to find in grass land, but more so in desert. There's another egg of ostrich which it doesn't spawn an ostrich, but rather the cooked version of the animal.