Status Definitions & Column Descriptions
Status
Has Status?
Does the species have status in the state of Arizona under the following resources:
Federal
ESA
Endangered Species Act (1973 as amended)
US Department of Interior, Fish and Wildlife Service
More information| Code | Definition |
|---|---|
| Listed | |
| LE | Listed Endangered: imminent jeopardy of extinction. |
| LT | Listed Threatened: imminent jeopardy of becoming Endangered. |
| PS | Partial Status: listed Endangered or Threatened, but not in entire range. |
| XN | Experimental Nonessential population. |
| PDL | Proposed for delisting. |
| No Status | certain populations of this taxon do not have designated status (check with state or regional USFWS office for details about which populations have designated status). |
| SAT | Listed Threatened due to Similarity of Appearance. This happens when a member of a non-listed population is found within the geographic area of a Distinct Population Segment for a listed species (e.g., a wintering bald eagle within the DPS for listed bald eagles). |
| Proposed for Listing | |
| PE | Proposed Endangered |
| PT | Proposed Threatened |
| Petitioned for Listing | |
| PTN | Petitioned for Listing. Formal request to list a species as endangered or threatened species under the Endangered Species Act. |
| UR | Under Review. Information is being gathered for final decision under Candidate or Petition Process. |
Candidate | |
| C | Candidate. Species for which the USFWS has on file sufficient information on biological vulnerability and threats to support proposals to list as Endangered or Threatened under ESA. Proposed rules for these species is precluded at present by other higher priority listing actions. |
| C* | The Service identifies species for which they made a continued warranted-but-precluded finding on a resubmitted petition by the code “C*” in the category column. This code was put into use starting in 2008. |
Candidate Conservation | |
| CCA | Candidate Conservation Agreement: Formal, voluntary agreements between the FWS and one or more parties to address the conservation needs of one or more candidate species or species likely to become candidates in the near future. Participants voluntarily commit to implement specific actions designed to remove or reduce threats to the covered species, so that listing may not be necessary. The degree of detail in CCAs can vary widely, and there are no specific permits or assurances associated with them. CCAs are primarily entered into between FWS and other Federal agencies and States, but local governments, Tribes, private property owners, and other entities may also participate. |
| CCAA | Candidate Conservation Agreement with Assurances: Addresses concerns about potential land use restrictions (land and water) that could occur if a species becomes listed under the ESA, by providing incentives for non-Federal property owners to engage in voluntary conservation activities. Specifically, a CCAA provides participating property owners with a permit containing assurances that if they engage in certain conservation actions for species included in the agreement, they will not be required to implement additional conservation measures beyond those in the CCAA. Also, additional land, water, or resource use limitations will not be imposed on them should the species become listed in the future, unless they consent to such changes. |
ESA Date
Date of last Endangered Species Act status change.
BLM
US Bureau of Land Management (Sensitive Species List – March 1, 2017)
US Department of Interior, Bureau of Land Management, Arizona State Office
More informationCode Definitions
| Code | Description |
|---|---|
| S | Sensitive: those taxa occurring on BLM District Office lands in Arizona which are considered sensitive by the Arizona State Office. |
USFS
US Forest Service (2013 Animals, 2013 Plants)
US Department of Agriculture, Forest Service, Region 3
Animals: More information (pdf)
Plants: More information (pdf)
| Code | Description |
|---|---|
| S | Sensitive: those taxa occurring on National Forests in Arizona which are considered sensitive by the Regional Forester. |
CRITHAB
Critical Habitat
More information| Code | Description |
|---|---|
| Y | Yes: Critical Habitat has been designated. |
| P | Proposed: Critical Habitat has been proposed. |
Other
NESL
Navajo Endangered Species List (2020)
Navajo Nation, Navajo Fish and Wildlife Department Endangered Species List
More information (pdf)The Navajo Endangered Species List contains taxa with status from the entire Navajo Nation which includes parts of Arizona, Utah, and New Mexico. In this notebook we provide NESL status for only those taxa whose distribution includes part or all of the Arizona portion of the Navajo Nation.
| Group | Description |
|---|---|
| 1 | Those species or subspecies that no longer occur on the Navajo Nation. |
| 2 | Any species or subspecies which is in danger of being eliminated from all or a significant portion of its range on the Navajo Nation. |
| 3 | Any species or subspecies which is likely to become an endangered species, within the foreseeable future, throughout all or a significant portion of its range on the Navajo Nation. |
| 4 | Any species or subspecies for which the Navajo Fish and Wildlife Department (NF&WD) does not currently have sufficient information to support their being listed in Group 2 or Group 3 but has reason to consider them. The NF&WD will actively seek information on these species to determine if they warrant inclusion in a different group or removal from the list. |
MEXFED
Mexican Federal Endangered Species List (August 13, 2018)
Proyecto de Norma Oficial Mexicana PROY-NOM-059-ECOL-2018
The Mexican Federal Endangered Species List contains taxa with status from the entire Mexican Republic and waters under its jurisdiction. In this notebook we provide MEX designations for only those taxa occurring in Arizona and also in Mexico.
| Code | Description |
|---|---|
| P | En Peligro de Extinción (Determined Endangered in Mexico): in danger of extinction. |
| A | Amenazada (Determined Threatened in Mexico): could become endangered if factors causing habitat deterioration or population decline continue. |
| PR | Sujeta a Protección Especial (Determined Subject to Special Protection in Mexico): utilization limited due to reduced populations, restricted distribution, or to favor recovery and conservation of the taxon or associated taxa. |
| E | Probablemente extinta en el medio silvestre (Probably extinct in the wild of Mexico): A native species whose individuals in the wild have disappeared, based on pertinent documentation and studies that prove it. The only existing individuals of the species are in captivity or outside the Mexican territory. |
| | | One or more subspecies of this species has status in Mexico, but the HDMS does not track it at the subspecies level (most of these subspecies are endemic to Mexico). Please consult the NORMA Oficial Mexicana PROY-NOM-059-ECOL-2000 for details. |
State
SGCN
Species of Greater Conservation Need (2022)
More informationArizona Game and Fish Department. 2022. Arizona Wildlife Conservation Strategy: 2022- 2032. Arizona Game and Fish Department, Phoenix, Arizona. 378 pages.
Each species in the SGCN list was scored for each of the following vulnerability criteria. If a species ranked as “vulnerable” (i.e., score = “1”) under one or more of the vulnerability criteria it was included in the SGCN. Ranks were not additive. The rank was based on the following criteria:
- Extirpated status
- Federal or State status
- Declining status
- Disjunct status
- Demographic status
- Concentration status
- Distribution status
Tiers
The list of SGCN was further categorized into three tiers reflecting the Department’s management commitments and priorities; tiers were ranked as follows:
| Tier | Description |
|---|---|
| 1 | Deemed vulnerable (scored a “1”) in at least one of the seven categories AND matches at least one of the following:
|
| 2 | Deemed vulnerable (scored a “1”) in at least one of the seven categories described, but matched none of the additional criteria for Tier 1. |
| 3 | Species with “unknown status” in at least one of the seven categories but don’t rise to a Tier 2. These species are those for which we are unable to assess status, and thus represent priority research and information needs. As more information becomes available, their tier status will be re-evaluated. |
NPL
Arizona Native Plant Law (2016)
Arizona Department of Agriculture
More information| Code | Description |
|---|---|
| HS | Highly Safeguarded: no collection allowed. |
| SR | Salvage Restricted: collection only with permit. |
| ER | Export Restricted: transport out of State prohibited. |
| SA | Salvage Assessed: permits required to remove live trees. |
| HR | Harvest Restricted: permits required to remove plant by-products. |
NatureServe
SRANK
Subnational Rank
Priority ranking (1 to 5) based on the number of occurrences of an element within a State.
More information| Rank | Description |
|---|---|
| SX | Presumed Extirpated—Species or ecosystem is believed to be extirpated from the jurisdiction (i.e., nation, or state/province). Not located despite intensive searches of historical sites and other appropriate habitat, and virtually no likelihood that it will be rediscovered. [equivalent to “Regionally Extinct” in IUCN Red List terminology]. |
| SH | Possibly Extirpated – Known from only historical records but still some hope of rediscovery. There is evidence that the species or ecosystem may no longer be present in the jurisdiction, 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 in human-dominated landscapes despite some searching and/or some evidence of significant habitat loss or degradation; (2) that a species or ecosystem 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 jurisdiction 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 jurisdiction due to restricted range, few populations or occurrences, steep declines, severe threats, or other factors. |
| S3 | Vulnerable— At moderate risk of extirpation in the jurisdiction due to a fairly restricted range, relatively few populations or occurrences, recent and widespread declines, threats, or other factors. Usually having 21-50 occurrences in the subnation |
| S4 | Apparently Secure— At a fairly low risk of extirpation in the jurisdiction 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. |
| S5 | Secure— At very low or no risk of extirpation in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. |
| S#B | State Breeding: populations which breed and tend to be present in the state year round; generally used in conjunction with SN Rank when taxon has both non-breeding and non-migratory (breeding) populations. |
| S#M | State migratory transient conservation status: where the population of a species occurs regularly on migration at particular staging areas or concentration spots where the species might warrant conservation attention. |
| S#N | State Non-breeding: typically non-breeding or wintering in the State. |
| SNR | Unranked — Subnational conservation status not yet assessed. |
| SU | Unrankable — Currently unrankable due to lack of information or due to substantially conflicting information about status or trends. |
| SNA | Not Applicable — A conservation status rank is not applicable because the species or ecosystem is not a suitable target for conservation activities. A global conservation status rank may be not applicable for several reasons, related to its relevance as a conservation target. For species, typically the species is a hybrid without conservation value, or of domestic origin. For ecosystems, the type is typically non-native (e.g. many ruderal vegetation types), agricultural (e.g. pasture, orchard) or developed (e.g. lawn, garden, golf course). |
GRANK
Global Rank
Global Rank: priority ranking (1 to 5) based on the number of occurrences throughout the entire range of the element. Global ranks are assigned by the NatureServe Home Office.
More information| Code | Description |
|---|---|
| GX | Presumed Extinct (species) — Not located despite intensive searches and virtually no likelihood of rediscovery Presumed Collapsed (ecosystem) — Collapsed throughout its range, due to loss of key dominant and characteristic taxa and/or elimination of the sites and ecological processes on which the type depends |
| GH | Possibly Extinct (species) or Possibly Collapsed (ecosystem) — 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 in human-dominated landscapes despite some searching and/or some evidence of significant habitat loss or degradation; (2) that a species or ecosystem has been searched for unsuccessfully, but not thoroughly enough to presume that it is extinct or collapsed throughout its range. |
| G1 | Critically Imperiled — At very high risk of extinction or collapse 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 or collapse due to restricted range, few populations or occurrences, steep declines, severe threats, or other factors. |
| G3 | Vulnerable — At moderate risk of extinction or collapse 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 or collapse 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. |
| G5 | Secure — At very low risk or extinction or collapse due to a very extensive range, abundant populations or occurrences, and little to no concern from declines or threats. |
| G#C | Captive or Cultivated: presently extant globally only in captivity or cultivation. (Used in conjunction with a GRank, i.e. GXC, GHC.) |
| G#Q | Taxonomic Question: taxonomic status is questionable; numeric rank may change with taxonomy. |
| G#T# | Infraspecific Taxon (trinomial) — The status of infraspecific taxa (subspecies or varieties) are indicated by a "T-rank" following the species global rank. For example, the global rank of a critically imperiled subspecies of an otherwise widespread and common species would be G5T1. A T subrank cannot imply the subspecies or variety is more abundant than the species, for example, a G1T2 subrank should not occur. A vertebrate animal population (e.g., listed under the U.S. Endangered Species Act or assigned candidate status) may be tracked as an infraspecific taxon and given a T rank; in such cases a Q is used after the T-rank to denote the taxon's informal taxonomic status. |
| G#? | Uncertain: insufficient information to give a definitive ranking. Confidence of numeric rank is plus or minus one rank. |
| GNR | Unranked — Global rank not yet assessed |
| GU | Unrankable — Currently unrankable due to lack of information or due to substantially conflicting information about status or trends. NOTE: Whenever possible (when the range of uncertainty is three consecutive ranks or less), a range rank (e.g., G2G3) should be used to delineate the limits (range) of uncertainty. |
| GNA | Not Applicable — A conservation status rank is not applicable because the species or ecosystem is not a suitable target for conservation activities. A global conservation status rank may be not applicable for several reasons, related to its relevance as a conservation target. For species, typically the species is a hybrid without conservation value, or of domestic origin. For ecosystems, the type is typically non-native (e.g. many ruderal vegetation types), agricultural (e.g. pasture, orchard) or developed (e.g. lawn, garden, golf course). |
Location
County
County species is present in. Useful for filtering to a desired county.
Data not available for every species.
Watershed Name
Watershed species is present in. Useful for filtering to a desired watershed.
Watershed Code
8-digit Hydrologic Unit Code (HUC) for watershed. Useful for filtering to a desired watershed.
Taxonomy
Taxonomy
Higher order taxonomic group.
Scientific Name
HDMS follows the taxonomy resources listed below for vertebrate species, with rare exceptions where Department experts recommend otherwise. For species listed under the Endangered Species Act (ESA), HDMS defers to the taxonomy used by the U.S. Fish and Wildlife Service (USFWS), even when it differs from these resources. For plants and invertebrates, HDMS reviews current literature and adopts the taxonomy most widely supported by the scientific community.
Amphibians and Reptiles
HDMS generally follows the Society for the Study of Amphibians and Reptiles (SSAR), with exceptions where it adopts Holycross et al. (2022) or Holycross and Mitchell (2020).
Details
- Nicholson, Kirsten E., editor. 2025. Scientific and standard English names of amphibians and reptiles of North America north of Mexico, with comments regarding confidence in our understanding. Ninth edition. Society for the Study of Amphibians and Reptiles. 87 pages. Available online at https://webapps.fhsu.edu/ksHerp/bibFiles/32018.pdf.
- Holycross, Andrew T., Thomas C. Brennan, and Randall D. Babb. 2022a. A field guide to amphibians and reptiles in Arizona, second edition. Arizona Game and Fish Department, Phoenix, Arizona. 165 pages.
- Holycross, Andrew T., Thomas C. Brennan, and Randall D. Babb. 2022b. A field guide to amphibians and reptiles in Arizona, second edition: Taxonomic notes photo credits and localities. Arizona Game and Fish Department, Phoenix, Arizona. 13 pages. Available online at https://azgfd-portal-wordpress-pantheon.s3.us-west-2.amazonaws.com/wp-content/uploads/archive/Field-Guide_Taxonomic-Notes-and-Photo-Credits_2022.pdf
- Holycross, Andrew T. and Joseph C. Mitchell, editors. 2020. Snakes of Arizona. ECO Publishing, Rodeo New Mexico. 837 pages.
Birds
HDMS follows the American Ornithological Society (AOS).
Details
- Chesser, R. Terry, Shawn M. Billerman, Kevin J. Burns, Carla Cicero, Jon L. Dunn, Blanca E. Hernández-Baños, Rosa Alicia Jiménez, Oscar Johnson, Nicholas A. Mason, Pamela C. Rasmussen. 2025. Sixty-sixth supplement to the American Ornithological Society’s check-list of North American birds. Ornithology 142(3):1-19. https://doi.org/10.1093/ornithology/ukaf015.
Fish
HDMS follows the American Fisheries Society (AFS).
Details
- Page, Lawrence M., Katherine E. Bemis, Thomas E. Dowling, Héctor S. Espinosa-Pérez, Lloyd T. Findley, Carter R. Gilbert, Karsten E. Hartel, Robert N. Lea, Nicholas E. Mandrak, Margaret A. Neighbors, Juan J. Schmitter-Soto, and H. J. Walker, Jr. 2023. Common and scientific names of fishes from the United States, Canada, and Mexico, 8th edition. American Fisheries Society, Committee on Names of Fishes, Bethesda, Maryland. 439 pages. https://doi.org/10.47886/9781934874691.
Mammals
HDMS follows the American Society of Mammalogists (ASM) Mammal Diversity Database.
Details
- American Society of Mammalogists. 2025. Mammal Diversity Database (Version 2.3), released 1 September 2025. Available at https://www.mammaldiversity.org/index.html.
Common Name
Colloquial name of the species.
Miscellaneous
TRACK
Indicates whether occurrences (i.e., EOs) of the Element are tracked by HDMS.
More information| Code | Description |
|---|---|
| Y | Track all extant and selected historical EOs |
| P | Track selected extant EOs (i.e., partial tracking) |
| W | Track on a watch list only |
| N | Do not track |
ELCODE
Biotics Element Code
More informationUnique identifier for an Element previously used in the Biological and Conservation Data system.