pokedex/data/csv/egg_groups.csv

   1 id,identifier
   2 1,monster
   3 2,water1
   4 3,bug
   5 4,flying
   6 5,ground
   7 6,fairy
   8 7,plant
   9 8,humanshape
  10 9,water3
  11 10,mineral
  12 11,indeterminate
  13 12,water2
  14 13,ditto
  15 14,dragon
  16 15,no-eggs