ANIMAL SKULL SIZES
An Alphabetized List

The list below is an alphabetized list of the mammal and the bird skulls found in the collection of DeLoy Roberts at Skyline High School in Idaho Falls, Idaho. Most are adult skulls unless mentioned otherwise. The measurements measure the length, width, and height of the skull, along with the length of the bill in the case of the birds. The width is usually measured from eye socket to eye socket. The height includes both the lower and the upper jaw. The specimens are listed in alphabetical order.


Skull Collection

Mammal Skulls

Mammal Skulls

Aplodontia(Mtn. Beaver) 7.5cm x 6cm x 4cm Armadillo 10cm x 4cm x 3.5cm Badger 12cm x 8cm x 7cm Bat (Silver Haired) 1.5cm x 0.75cm x 0.75cm Bat (Little Brown) 1.5cm x 0.75cm x 0.75cm Bear (Grizzly) 42cm 24cm x 18cm Bear (Black) 26cm x 16cm x 13cm Beaver 12cm x 9.5cm x 9cm Sheep (Bighorn) 29cm x 17cm x 17cm Bison (Buffalo) 55cm x 30cm x 40cm Bobcat 14cm x 10cm x 7cm Cat (House) 9cm x 6cm x 5cm Chinchilla 6cm x 3.5cm x3cm Chipmunk (Western/Siberian) 3cm x 2cm x 1.5cm Chipmunk (Eastern) 3.5cm x 2cm x 2cm Cottontail 6cm x 2.5cm x 3.5cm Cottontail (Eastern) 8cm x 4cm x 5cm Cow 49cm x 21cm x 16cm Coyote 20cm x 10cm x 8cm Deer (Mule) 29cm x 12cm x 13cm Deer (Sika) 24cm x 11cm x 12cm Deer (White-tailed) 29cm x 12cm x 13cm Dog 18cm x 8cm x 7cm Ermine 4cm x 2cm x 2cm Ferret 6cm x 3cm x 3cm Fisher 14cm x 8cm x 5.5cm Fox (Silver) 14cm x 7cm x 5cm Fox (Red) 15cm x 7.5cm x 6.5cm Gerbil 3.5cm x 2cm x 2cm Goat (Domestic) 22cm x 11cm x 11cm Gopher (Botta's Pocket) 4cm x 2.5cm x 2.5cm Guinea Pig 7cm x 4cm x 3.5cm Hamster (Siberian Dwarf) 2cm x 1cm x1cm Hamster (Golden) 3.5cm x 2cm x 2cm Hedgehog (African Pygmy) 4.5cm x 2.5cm x 3cm Horse 55cm x 22cm x 30cm Human(Man) 22cm x 13cm x 15cm Jackrabbit 6cm x 3cm x 4cm Llama 28cm x 13.5cm x 14cm Lynx (Canadian) 14cm x 9cm x 7cm Marten (American) 9cm x 5cm x 4cm Mink 6cm x 3.5cm x 3cm Mole (Pacific) 4cm x 2cm x 1.5cm Moose (Female Cow) 56cm x 18cm x 20cm Moose (Male Bull) 63cm x 23cm x24cm Mouse (Deer) 3cm x 1.5cm x 1.5cm Mouse (White-footed) 2.5cm x 1.5cm x 1.5cm Muskrat 6cm x 4cm x 3.5cm Opossum 11cm x 6cm x 5cm Otter (River) 13cm x 8cm x 5.5cm Peccary (Javelina) 23cm x 11cm x 15cm Pig 25cm x 14cm x 16cm Porcupine 9cm x 7cm x 6cm Pronghorn (Antelope) 28cm x 12cm x 14cm Puma (Mtn. Lion) 23cm 15cm x 12cm Racoon 13cm x 7.5cm x 6cm Rat (Brown) 4cm x 2cm x 2cm Rockchuck (Marmot) 8cm x 5.5cm x 4cm Sea lion (California) 30cm x 17cm x 16cm Sheep 23cm x 12cm x 13cm Shrew (Northern) 2cm x 1cm x 0.75cm Skunk 7cm x 4cm x 4cm Squirrel (Fox) 6.5cm x 4cm x 4cm Squirrel (Ground) 4cm x 3cm x 2cm Squirrel (Gray) 6cm x 3.5cm x 3cm Squirrel (Red) 4.5cm x 2.5cm x 2.5cm Vole (Meadow) 3cm x 1.5cm x 1.5cm Wapiti (Elk) 44cm x 18cm x 17cm Wolf (Canadian) 26cm x 14cm x 12cm Wolverine 15cm x 10cm x 6cm Woodchuck (Goundhog) 7.5cm x 5.5cm x 4cm


Bird Skulls

Bird Skulls

Blackbird                4.5cm x 2cm x 2cm    bill=2cm
Blackbird (Brewer's)	 5cm x 2cm x 1.5cm    bill=1.5cm
Bluebill                 8cm x 2.5cm x 3cm    bill=4.5cm
Bluebird  (Mountain)     5cm x 2cm x 2cm      bill=2cm
Bufflehead               6cm x 2cm x 2.5cm    bill=3.5cm
Bunting   (Indigo)       2.25cm x 1.5cm x 1cm bill=1cm
Canary                   2.5cm x 1.5cm x 1.5cmbill=1cm
Cardinal  (Northern)     4cm x 2cm x 2cm      bill=2cm
Chicken                  7cm x 3cm x 3cm      bill=3cm
Cormorant                13.5cm x 3.5cm x 4cm bill=7cm
Crane     (Sandhill)     22cm x 4cm x 4cm     bill=16cm
Crossbill (White-winged) 4cm x 2.25cm x 2cm   bill= 2cm
Crossbill (Red/Common)   4cm x 2cm x 2cm      bill=1.5cm
Crow                     8cm x 3.5cm x 3cm    bill=4.5cm
Dove      (Mourning)     4cm x 1.5cm x 1.5cm  bill=1.5cm
Eagle     (Golden)       12cm x 6.5cm x 5cm   bill=5cm
Egret     (Snowy)        14cm x 4cm x 4cm     bill=8.5cm
Egret     (Common, or    16cm x 4.5cm x 4.5cm bill=9.5cm
  Great White Heron)
Emu                      16cm x 7cm x 6cm     bill=8cm
Finch     (House)        4.5cm x 2cm x 1.5cm  bill=2.5cm
Finch     (Gold)         
Flycatcher               3.5cm x 1.5cm x 1.5cmbill=2cm
Gadwall                  8cm x 2.5cm x 2.5cm  bill=4.5cm
Goldeneye (Common)       8cm x 3cm x 3.5cm    bill=4cm
Goldeneye (Barrow's)     9cm x 3cm x 4cm      bill=4cm
Goldfinch                3cm x 1.5cm x 1.5cm  bill=1.25cm
Goose     (Canadian)     12cm x 4cm x 4.5cm   bill=6cm
Grouse    (Ruffed)       4.5cm x 2cm x 2cm    bill=2cm
Grouse    (Blue)         6cm x 3cm x 2.5cm    bill=2.5cm
Grouse    (Sage Hen)     8cm x 4cm x 3cm      bill=4cm
Gull   (Glaucous-winged) 13cm x 4.5cm x 4cm   bill=7cm
Gull(Herring,or Seagull) 9cm x 3cm x 3cm      bill=5cm 
Hawk      (Cooper's)     4.5cm x 2.5cm x 2.5cmbill=1.5cm
Hawk      (Ferrugimous)  8.5cm x 6cm x4cm     bill=3.5cm
Hawk      (Red-Tailed)   7cm x 5cm x 3.5cm    bill=2cm
Hawk      (Sparrow)      4cm x 2.5cm x 2.5cm  bill=1.5cm
Hawk	  (Sharp-shinned)6cm x 3cm x 3cm      bill=2cm
Hawk      (Swainson's)   7cm x 4cm x 4cm      bill=2.5cm
Heron     (Great Blue)   16cm x 2.5cm x 3cm   bill=10.5cm
Hummingbird (Anna's)
Hummingbird (Rufous)     1cm x 0.75cm x 0.75cm bill=2cm
Jaegar    (not an adult skull)
Junco     (Dark-Eyed))   3cm x 2cm x 1.5cm    bill=1cm
Killdeer                 5cm x 1.5cm x 2cm    bill=2cm
Kingbird                 4cm x 2cm x 1.5cm    bill=2cm
Kingfisher               9.5cm x 2.5cm x 3cm  bill=5.5cm
Kinglet (Golden-Crowned) 2.25cm x 1cm x 1cm   bill=0.75cm 
Lovebird                 3.5cm x 2cm x 2.5cm  bill=2cm
Magpie                   6cm x 3cm x 2.5cm    bill=3cm
Mallard                  11cm x 3cm x 3.5cm   bill=6cm
Meadowlark               4cm x 2cm x 2cm      bill=1.25cm
Merganser (Common)       10cm  x 3cm x 3cm    bill=6cm
Merganser (Hooded)       11.5cm x 3cm x 2.5cm bill=6.5cm
Mud Duck                 7.5cm x 2cm x 2.5cm  bill=2.5cm
Murre     (Common)       11cm x 4cm x 3.5cm   bill=6.5cm
Murrelet  (Ancient)      6.5cm x 2.5cm x 2cm  bill=3cm
Ostrich                  19cm x 8cm x 8cm     bill=10cm
Owl       (Burrowing)    6cm x 4cm x 4cm      bill=3cm
Owl       (Great Gray)   8cm x 6cm x 5cm      bill=3.5cm
Parrakeet                2.5cm x 1.5cm x 1.5cmbill=1cm
Parrott   (African Grey) 6.5cm x 3.5cm x 4cm  bill=4cm
Partridge (Hungarian)    4cm x 2cm x 2cm      bill=1.5cm
Pelican   (Brown)        41cm x 5cm x 5cm     bill=32cm
Petrel                   11cm x 3.5cm x 3cm   bill=7cm
Pheasant                 7cm x 3cm x 3cm      bill=4cm
Pheasant  (Golden)       6cm x 2.5cm x 2.5cm  bill=2.5cm
Pigeon                   5cm x 2cm x 2cm      bill=2cm
Pintail   (Northern)     11cm x 3cm x 3.5cm   bill=6cm
Raven                    11.5cm x 4.5cm x 4cm bill=7cm
Rhea                     13cm x 6cm x 5cm     bill=7cm
Ring-Neck (Duck)         9.5cm x 2.5cm x 5cm  bill=5cm
Robin                    5cm x 2cm x 2cm      bill=2cm
Ruddy Duck               10cm x 3cm x 3cm     bill=5cm
Sage Hen                 8cm x 4cm x 3cm      bill=4cm
Snipe     (Common)       10cm x 1.5cm x 1.5cm bill=7.5cm
Sparrow   (Lincoln's)    3cm x 1.5cm x 1.5cm  bill=1cm
Sparrow   (House)        3cm x 1.5cm x 1.5cm  bill=1cm
Sparrow  (White-Throated)        
Starling                 4cm x 2cm x 2cm      bill=2cm
Tanager   (Western)      2.5cm x 1cm x 1cm    bill=1cm
Teal      (Blue-winged)  8.5cm x 2.5cm x 3cm  bill=4cm
Teal      (Green-winged) 7.5cm x 2cm x 3cm    bill=3.5cm
Thrush    (Varied)       5cm x 2cm x 2cm      bill=2.5cm
Turkey    (Domestic)     12cm x 5cm x 5cm     bill=7cm
Turkey    (Eastern Wild) 11cm x 4cm x 4cm     bill=6cm
Vulture   (Turkey or     12cm x 4cm x 5cm     bill=6cm
           Buzzard)      
Warbler   (Wilson's)     3cm x 1cm x 1cm      bill=1.25cm
Waxwing   (Cedar)        4cm x 2cm x 1.5cm    bill=2cm
Wigeon    (American)     8cm x 2.5cm x 3cm    bill=4cm
Woodpecker(American)
Woodpecker(Hairy)        6cm x 2cm x 2cm      bill=3.5cm
Wren      (Rock)         3.5cm x 1.5cm x 1cm  bill=2cm
Yellowthroat             2.5cm x 1cm x 1cm    bill=1cm


  • Skull Collection
  • School District #91