NPCs composing that spawngroup :

a_river_rat (100%)

NPCs spawning around that spawngroup :
(Max range : 200)

warrens_6, range=103 (708,-559,-82)

a_kobold_guard (50%)
a_rabid_kobold (50%)

warrens_33, range=162 (488,-411,-74)

a_kobold_protector (50%)
a_rabid_kobold (50%)

warrens_49, range=85 (695,-465,-75)

warrens_50, range=123 (582,-387,-66)

warrens_51, range=69 (598,-439,-79)

warrens_66, range=140 (612,-365,-75)

a_kobold_protector (50%)
a_kobold_sentry (50%)

warrens_70, range=162 (540,-646,-82)

warrens_71, range=174 (557,-668,-82)

warrens_78, range=103 (702,-568,-82)

warrens_106, range=186 (442,-561,-76)

warrens_111, range=89 (568,-579,-98)

a_river_rat (100%)

warrens_112, range=38 (658,-506,-91)

a_river_rat (50%)
a_river_rat (50%)

warrens_137, range=118 (733,-541,-76)

a_kobold_fisherman (50%)
a_kobold_fisherman (50%)

warrens_138, range=112 (729,-477,-75)

warrens_139, range=68 (643,-569,-85)

warrens_140, range=167 (592,-670,-81)

a_kobold_sentry (50%)
a_rabid_kobold (50%)

warrens_149, range=173 (720,-647,-64)

warrens_150, range=153 (682,-365,-76)

warrens_174, range=76 (586,-437,-79)

a_kobold_guard (50%)
a_rabid_kobold (50%)

warrens_190, range=192 (430,-534,-77)

a_kobold_archer (50%)
a_kobold_sentry (50%)

warrens_206, range=148 (668,-646,-65)

a_kobold_runt (100%)