NPCs composing that spawngroup :

a_cave_bat (33%)

a_cave_bat (33%)

a_cave_bat (34%)

NPCs spawning around that spawngroup :
(Max range : 100)

warrens_54, range=65 (662,-8,-79)

a_kobold_archer (50%)
a_kobold_sentry (50%)

warrens_55, range=68 (693,-11,-80)

a_kobold_archer (50%)
a_kobold_sentry (50%)

warrens_61, range=99 (580,-19,-80)

warrens_62, range=81 (670,-154,-80)

a_kobold_sentry (50%)
a_rabid_kobold (50%)

warrens_63, range=74 (700,-138,-79)

warrens_141, range=60 (692,-126,-80)

a_cave_bat (50%)
a_cave_bat (50%)

warrens_142, range=77 (665,-150,-80)

a_cave_bat (50%)
a_cave_bat (50%)

warrens_173, range=28 (691,-69,-79)