Ecology & Evolutionary Biology graduate student, Tim Brown interprets animal tracks on the beach with a UCSC Ecology class.

Although only 72-acres in size, Younger Lagoon Reserve provides habitat for many mammal species. Some of these mammals reside at the reserve, while others pass through, finding food and temporary shelter as they make their way to other natural areas.

Younger Lagoon Reserve Mammal Species List
Family Genius and Species Common Name Code
Didelphidae Didelphis virginiana Virginia Opossum X
Soricidae Sorex vagrans Vagrant Shrew X*
Sorex ornatus Ornate Shrew
Sorex trowbridgii Trowbridge's Shrew
Talpidae Scapanus latimanus Broad-footed Mole
Vespertilionidae Myotis yumanensis Yuna Myotis X*
Myotis evotis Long-eared Myotis
Myotis thysanodes Fringed Myotis
Myotis volans Long-legged Myotis
Myotis californicus California Myotis
Pipistrellus hesperus Western Pipistrelle
Eptesicus fuscus Big Brown Bat
Lasiurus cinereus Red Bat
Plecotus townsendii Townsend's Big-eared Bat
Antrozous pallidus Pallid Bat
Molossidae Tadarida brasiliensis Brazilian Free-tailed Bat
Eumops perotis Western Mastiff Bat
Leporidae Sylvilagus bachmani Brush Rabbit X
Sciuridae Spermophilus beecheyi California Ground Squirrel X
Geomyidae Thomomys bottae Botta's Pocket Gopher X
Cricetidae Reithrodontomys megalotis Western Harvest Mouse X
Peromyscus maniculatus Deer Mouse X
Peromyscus truei Pinyon Mouse
Neotoma fuscipes Dusky-footed Woodrat X
Microtus californicus California Vole X
Muridae Rattus norvegicus Norway Rat X, E
Mus musculus House Mouse X, E
Canidae Canis latrans Coyote X
Vulpes vulpes Red Fox ?, E
Urocyon cinereoargenteus Common Gray Fox X
Procyonidae Procyon lotor Common Raccoon X
Mustelidae Mustela frenata Long-tailed Weasel X
Taxidea taxus American Badger
Mephitis mephitis Striped Skunk X
Felidae Felis concolor Mountain Lion ?
Felis rufus Bobcat X
Suidae Sus scrofa Feral Pig (Wild Pig) E
Cervidae Odocoileus hemionus Mule Deer X
X = Confirmed by surveys by sighting, trapping, photo station, tracks or sign
X* = Shrew not identified to species, bats were sighted flying, no positive identification
E = Exotic species, to be kept out
? = Reported casual sighting
This species list is derived from student field studies and from species expected to occur at YLR, according to the Wildlife Habitats Relationship database of the California Department of Fish and Game. We have omitted species that, although they might possibly occur, are unlikely due to reserve size, isolation or habitat availability. We have included all the bats and omitted marine mammals. The list is organized according to taxonomic classification.