Media for "animal_materials",  "deer", "elk", and "ostrich":

See  the  5 associated  Lua  source files.  In general,  the media is:
(c) 2012 to 2019 and  CC-BY-SA 3.0:  Sapier and Poikilos

The "ostrich" texture is as described above but also attribution: Old-
Coder.