diff --git a/data/json/monstergroups/misc.json b/data/json/monstergroups/misc.json
index ff63f4067074e..7067e71003f49 100644
--- a/data/json/monstergroups/misc.json
+++ b/data/json/monstergroups/misc.json
@@ -211,7 +211,7 @@
       { "monster": "mon_dog_dachshund", "weight": 2, "cost_multiplier": 25, "pack_size": [ 1, 3 ] },
       { "monster": "mon_dog_gshepherd", "weight": 3, "cost_multiplier": 25, "pack_size": [ 1, 3 ] },
       { "monster": "mon_dog_samoyed", "weight": 1, "cost_multiplier": 25, "pack_size": [ 1, 3 ] },
-      { "monster": "mon_chicken", "weight": 50, "cost_multiplier": 10, "pack_size": [ 1, 16 ] },
+      { "group": "GROUP_BIRD_DOMESTIC", "weight": 50, "cost_multiplier": 5, "pack_size": [ 1, 5 ] },
       { "group": "GROUP_COWS", "weight": 50, "cost_multiplier": 25, "pack_size": [ 1, 8 ] },
       { "group": "GROUP_HORSES", "weight": 50, "cost_multiplier": 25, "pack_size": [ 1, 4 ] },
       { "group": "GROUP_PIGS", "weight": 10, "cost_multiplier": 25, "pack_size": [ 1, 6 ] },
@@ -221,7 +221,6 @@
       { "group": "GROUP_PIGS", "weight": 10, "cost_multiplier": 25, "ends": "90 days", "pack_size": [ 1, 6 ] },
       { "group": "GROUP_SHEEPS", "weight": 50, "cost_multiplier": 25, "pack_size": [ 1, 12 ] },
       { "monster": "mon_goat", "weight": 25, "cost_multiplier": 25, "pack_size": [ 1, 12 ] },
-      { "monster": "mon_goose", "weight": 10, "cost_multiplier": 25, "pack_size": [ 1, 6 ] },
       { "monster": "mon_llama", "weight": 50, "cost_multiplier": 25, "pack_size": [ 1, 8 ] },
       { "monster": "mon_zombie_pig", "weight": 10, "cost_multiplier": 25, "starts": "3 days", "pack_size": [ 1, 5 ] },
       { "monster": "mon_zombie_pig", "weight": 10, "cost_multiplier": 25, "starts": "7 days", "pack_size": [ 1, 5 ] },
@@ -235,6 +234,28 @@
       { "monster": "mon_ferret", "weight": 10 }
     ]
   },
+  {
+    "type": "monstergroup",
+    "name": "GROUP_BIRD_DOMESTIC",
+    "default": "mon_chicken",
+    "is_animal": true,
+    "monsters": [
+      { "monster": "mon_chicken", "weight": 10, "pack_size": [ 1, 4 ] },
+      { "monster": "mon_duck_domestic", "weight": 6, "pack_size": [ 1, 3 ] },
+      { "monster": "mon_goose", "weight": 3, "pack_size": [ 1, 2 ] },
+      { "monster": "mon_turkey_domestic", "weight": 1 }
+    ]
+  },
+  {
+    "type": "monstergroup",
+    "name": "GROUP_BIRD_DOMESTIC_WATERFOWL",
+    "default": "mon_chicken",
+    "is_animal": true,
+    "monsters": [
+      { "monster": "mon_duck_domestic", "weight": 2, "pack_size": [ 1, 3 ] },
+      { "monster": "mon_goose", "weight": 1, "pack_size": [ 1, 2 ] }
+    ]
+  },
   {
     "type": "monstergroup",
     "name": "GROUP_SAFE",
@@ -244,7 +265,7 @@
       { "monster": "mon_null", "weight": 679 },
       { "monster": "mon_bat", "weight": 10 },
       { "monster": "mon_bobcat", "weight": 10 },
-      { "monster": "mon_chicken", "weight": 10 },
+      { "group": "GROUP_BIRD_DOMESTIC", "weight": 20 },
       { "monster": "mon_chipmunk", "weight": 10 },
       { "monster": "mon_crow", "weight": 10 },
       { "monster": "mon_raven", "weight": 10 },
@@ -278,7 +299,6 @@
       { "group": "GROUP_SHEEPS", "weight": 10 },
       { "monster": "mon_goat", "weight": 10 },
       { "monster": "mon_lemming", "weight": 10 },
-      { "monster": "mon_goose", "weight": 10 },
       { "monster": "mon_llama", "weight": 10 },
       { "monster": "mon_woodlouse", "weight": 10 },
       { "monster": "mon_cicada_nymph", "weight": 10 },
@@ -520,7 +540,6 @@
       { "monster": "mon_opossum", "weight": 10 },
       { "monster": "mon_squirrel", "weight": 20 },
       { "monster": "mon_weasel", "weight": 20 },
-      { "monster": "mon_chicken", "weight": 10 },
       { "monster": "mon_grouse", "weight": 10 },
       { "monster": "mon_pheasant", "weight": 10 },
       { "monster": "mon_turkey", "weight": 20 }
@@ -532,7 +551,6 @@
     "//": "Special group with hardcoded reference in basecamp::hunting_results. Does not actually spawn anywhere, used solely to determine returns from camp hunting mission.",
     "//2": "This group can only be picked from when the hunt large animals mission is used, in addition to GROUP_CAMP_HUNTING.",
     "monsters": [
-      { "monster": "mon_chicken", "weight": 20 },
       { "monster": "mon_grouse", "weight": 2 },
       { "monster": "mon_pheasant", "weight": 2 },
       { "monster": "mon_turkey", "weight": 10 },
diff --git a/data/json/monstergroups/wilderness.json b/data/json/monstergroups/wilderness.json
index 22ac6f2efa300..24b716d9269e8 100644
--- a/data/json/monstergroups/wilderness.json
+++ b/data/json/monstergroups/wilderness.json
@@ -356,7 +356,7 @@
         "pack_size": [ 1, 3 ]
       },
       { "group": "GROUP_WATER_STRIDER", "weight": 15, "cost_multiplier": 3, "pack_size": [ 2, 4 ] },
-      { "monster": "mon_goose", "weight": 15, "cost_multiplier": 5, "pack_size": [ 1, 4 ] },
+      { "group": "GROUP_BIRD_DOMESTIC_WATERFOWL", "weight": 15, "cost_multiplier": 5, "pack_size": [ 1, 2 ] },
       { "monster": "mon_coot", "weight": 15, "cost_multiplier": 5, "pack_size": [ 1, 6 ] },
       { "monster": "mon_moorhen", "weight": 15, "cost_multiplier": 5, "pack_size": [ 1, 6 ] },
       { "monster": "mon_cormorant", "weight": 15, "cost_multiplier": 5, "pack_size": [ 1, 4 ] },
@@ -521,7 +521,6 @@
       { "monster": "mon_chipmunk", "weight": 50, "cost_multiplier": 0 },
       { "monster": "mon_squirrel", "weight": 50, "cost_multiplier": 0 },
       { "monster": "mon_squirrel_red", "weight": 50, "cost_multiplier": 0 },
-      { "monster": "mon_chicken", "weight": 10 },
       { "monster": "mon_turkey", "weight": 10 },
       {
         "monster": "mon_raccoon",
@@ -565,7 +564,7 @@
     "monsters": [
       { "monster": "mon_duck", "weight": 50, "cost_multiplier": 0 },
       { "monster": "mon_goose_canadian", "weight": 50, "cost_multiplier": 0 },
-      { "monster": "mon_goose", "weight": 50, "cost_multiplier": 0 },
+      { "group": "GROUP_BIRD_DOMESTIC_WATERFOWL", "weight": 50, "cost_multiplier": 0 },
       { "monster": "mon_coot", "weight": 50, "cost_multiplier": 0 },
       { "monster": "mon_moorhen", "weight": 50, "cost_multiplier": 0 },
       { "monster": "mon_cormorant", "weight": 50, "cost_multiplier": 0 },
@@ -627,7 +626,7 @@
     "is_animal": true,
     "monsters": [
       { "monster": "mon_goat", "weight": 1, "pack_size": [ 1, 4 ] },
-      { "monster": "mon_chicken", "weight": 10, "pack_size": [ 4, 6 ] }
+      { "group": "GROUP_BIRD_DOMESTIC", "weight": 10, "pack_size": [ 1, 2 ] }
     ]
   },
   {
@@ -636,7 +635,6 @@
     "is_animal": true,
     "monsters": [
       { "monster": "mon_duck", "weight": 20, "pack_size": [ 1, 4 ], "conditions": [ "SPRING", "SUMMER", "AUTUMN" ] },
-      { "monster": "mon_goose", "weight": 15, "pack_size": [ 2, 4 ] },
       { "monster": "mon_coot", "weight": 15, "pack_size": [ 2, 4 ] },
       { "monster": "mon_moorhen", "weight": 15, "pack_size": [ 2, 4 ] },
       { "monster": "mon_cormorant", "weight": 15, "pack_size": [ 2, 4 ] },