SPECIAL ANIMALS LIST July 2021 State of California Natural Resources Agency Department of Fish and Wildlife Biogeographic Data Branch California Natural Diversity Database (CNDDB) Recommended Citation: California Natural Diversity Database (CNDDB). July 2021. Special Animals List. California Department of Fish and Wildlife. Sacramento, CA. Table of Contents Special Animals ................................................................................................................ i NatureServe Element Ranking ........................................................................................ iii Animal Element Occurrences and Mapping .................................................................. viii Taxonomic Standards .....................................................................................................ix Listing and Special Status Information ............................................................................xi Table of Special Status Code Abbreviations ................................................................ xvii Special Animals List .................................................................................................... xviii Special Animals “Special Animals” is a broad term used to refer to all the animal taxa tracked by the California Department of Fish and Wildlife’s (CDFW) California Natural Diversity Database (CNDDB), regardless of their legal or protection status. This list is also referred to as the list of “species at risk” or “special status species.” The Special Animals List includes species, subspecies, Distinct Population Segments (DPS), or Evolutionarily Significant Units (ESU) where at least one of the following conditions applies: • Officially listed or proposed for listing under state and/or federal endangered species acts • Taxa considered by the Department of Fish and Wildlife to be a Species of Special Concern (SSC) • Taxa which meet the criteria for listing, even if not currently included on any list, as described in Section 15380 of the California Environmental Quality Act Guidelines • Taxa that are biologically rare, very restricted in distribution, or declining throughout their range, but not currently threatened with extirpation • Population(s) in California that may be peripheral to the major portion of a taxon’s range but are threatened with extirpation in California • Taxa closely associated with a habitat that is declining in California at a significant rate (e.g., wetlands, riparian, vernal pools, old growth forests, desert aquatic systems, native grasslands, valley shrubland habitats, etc.) • Taxa designated as a special status, sensitive, or declining species by other state or federal agencies, or a non-governmental organization (NGO), and determined by the CNDDB to be rare, restricted, declining, or threatened across their range in California The Special Animals List contains taxa that are actively inventoried, tracked, and mapped by the CNDDB, as well as taxa for which mapped data may not yet be incorporated into CNDDB user products. For the latter taxa, information at the county i and 7.5-minute USGS quadrangle level can be accessed via the CNDDB QuickView Tool. Taxa with a “Yes” in the “End Notes?” column have additional information in the End Notes section at the back of the list. Additional information about the California Natural Diversity Database is available on the CNDDB website. Information on other CDFW resource management programs is available on the Department’s Conservation and Management of Wildlife and Habitat website. The CDFW Nongame Wildlife Program provides additional information on wildlife habitat, threats, and survey guidelines. ii NatureServe Element Ranking The California Natural Diversity Database program is a member of the NatureServe Network of natural heritage programs, and uses the same conservation status methodology as other network programs. The ranking system was originally developed by The Nature Conservancy and is now maintained and recently revised by NatureServe. It includes a Global rank (G-rank), describing the status for a given taxon over its entire distribution, and a State rank (S-rank), describing the status for the taxon over its state distribution. For subspecies and varieties, there is also a “T” rank describing the global rank for the infraspecific taxon. The next page of this document details the criteria used to assign element ranks, from G1 to G5 for the Global rank and from S1 to S5 for the State rank. Procedurally, state programs such as the CNDDB develop the State ranks. The Global ranks are determined collaboratively among the Heritage Programs for the states/provinces containing the species. NatureServe then checks for consistency and logical errors at the national level. Because the units of conservation may include non-taxonomic biological entities such as populations or ecological communities, NatureServe refers to the targets of biological conservation as “elements” rather than taxa. An element rank is assigned using standard criteria and rank definitions. This standardization makes the ranks comparable between organisms and across political boundaries. NatureServe has developed a “rank calculator” to help increase repeatability and transparency of the ranking process. The three main categories that are taken into consideration when assigning an element rank are rarity, threats, and trends. Within these three categories, various factors are considered, including: • Range extent, area of occupancy, population size, total number of occurrences, and number of good occurrences (ranked A or B). Environmental specificity can also be used if other information is lacking. • Overall threat impact as well as intrinsic vulnerability (if threats are unknown). • Long-term and short-term trends. iii Detailed information on this element ranking methodology can be found on the NatureServe Conservation Status Assessment website. Listed below are definitions for interpreting global and state conservation status ranks. An element’s ranking status may be adjusted up or down depending upon the considerations above. Global Ranking The global rank (G-rank) is a reflection of the overall status of an element throughout its global range. • GX: Presumed Extinct – Not located despite intensive searches and virtually no likelihood of rediscovery. • GH: Possibly Extinct – Known from only historical occurrences but still some hope of rediscovery. Examples of evidence include (1) that a species has not been documented in approximately 20-40 years despite some searching and/or some evidence of significant habitat loss or degradation; (2) that a species has been searched for unsuccessfully, but not thoroughly enough to presume that it is extinct throughout its range. • G1: Critically Imperiled – At very high risk of extinction due to very restricted range, very few populations or occurrences, very steep declines, very severe threats, or other factors. • G2: Imperiled – At high risk of extinction due to restricted range, few populations or occurrences, steep declines, severe threats, or other factors. • G3: Vulnerable – At moderate risk of extinction due to a fairly restricted range, relatively few populations or occurrences, recent and widespread declines, threats, or other factors. • G4: Apparently Secure – At fairly low risk of extinction due to an extensive range and/or many populations or occurrences, but with possible cause for some concern as a result of local recent declines, threats, or other factors. iv • G5: Secure – At very low risk of extinction due to a very extensive range, abundant populations or occurrences, and little to no concern from declines or threats. • GNR: Unranked – Global rank not yet assessed. State Ranking The state rank (S-rank) is assigned in much the same way as the global rank, but state ranks refer to the imperilment status only within California’s state boundaries. • SX: Presumed Extirpated – Species is believed to be extirpated from the state Not located despite intensive searches of historical sites and other appropriate habitat, and virtually no likelihood that it will be rediscovered • SH: Possibly Extirpated – Known from only historical records but still some hope of rediscovery. There is evidence that the species may no longer be present in the state, but not enough to state this with certainty. Examples of such evidence include (1) that a species has not been documented in approximately 20-40 years despite some searching and/or some evidence of significant habitat loss or degradation; (2) that a species has been searched for unsuccessfully, but not thoroughly enough to presume that it is no longer present in the jurisdiction. • S1: Critically Imperiled – At very high risk of extirpation in the state due to very restricted range, very few populations or occurrences, very steep declines, severe threats, or other factors. • S2: Imperiled – At high risk of extirpation in the state due to restricted range, few populations or occurrences, steep declines, severe threats, or other factors. • S3: Vulnerable – At moderate risk of extirpation in the state due to a fairly restricted range, relatively few populations or occurrences, recent and widespread declines, threats, or other factors. • S4: Apparently Secure – At a fairly low risk of extirpation in the state due to an extensive range and/or many populations or occurrences, but with possible cause for some concern as a result of local recent declines, threats, or other factors. v • S5: Secure – At very low or no risk