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Picoides Dorsalis SPECIES: Scientific [common] Picoides dorsalis [American three-toed wood- pecker] Forest: Salmon–Challis National Forest Forest Reviewer: Mary Friberg Date of Review: 2/23/2018 Forest concurrence (or recommendation No if new) for inclusion of species on list of potential SCC: (Enter Yes or No) FOREST REVIEW RESULTS: 1. The Forest concurs or recommends the species for inclusion on the list of potential SCC: Yes___ No_X__ 2. Rationale for not concurring is based on (check all that apply): Species is not native to the plan area _______ Species is not known to occur in the plan area _______ Species persistence in the plan area is not of substantial concern ____X___ FOREST REVIEW INFORMATION: 1. Is the Species Native to the Plan Area? Yes_x__ No___ If no, provide explanation and stop assessment. 2. Is the Species Known to Occur within the Planning Area? Yes__x_ No___ If no, stop assessment. Table 1. All Known Occurrences, Years, and Frequency within the Planning Area Year Observed Number of Location of Observations (USFS Source of Information Individuals District, Town, River, Road Inter- section, HUC etc.) Idaho Fish and Wildlife Infor- 2012 1 North Fork Ranger District mation System (January 2017) Idaho Fish and Wildlife Infor- 2012 2 Lost River Ranger District mation System (January 2017) Idaho Fish and Wildlife Infor- 1995-2010 5 Middle Fork Ranger District mation System (January 2017) Idaho Fish and Wildlife Infor- 1995 4 Challis Yankee Ranger District mation System (January 2017) 1997-2003 3 Leadore Ranger District USFS NRIS Wildlife (April 2017) 1993-1999 3 Salmon-Cobalt Ranger District USFS NRIS Wildlife (April 2017) a. Are all Species Occurrences Only Accidental or Transient? Yes___ No_x__ If yes, document source for determination and stop assessment. b. For species with known occurrences on the Forest since 1990, based on the number of observa- tions and/or year of last observation, can the species be presumed to be established or becom- ing established in the plan area? Yes_x__ No___ If no, provide explanation and stop assessment c. For species with known occurrences on the Forest predating 1990, does the weight of evidence suggest the species still occurs in the plan area? Yes___ No___ Provide explanation for determination: N/A. Occurrences have been recorded since 1990. If determination is no, stop assessment d. Map 1. American Three-toad Woodpecker Observations in Idaho (IDFG 2017) Idaho Department of Fish and Game (IDFG) 2017. American three-toed woodpecker Picoides dorsalis. Internet website: https://idfg.idaho.gov/species/taxa/20015. Accessed on August 14, 2017. e. Map 2, American Three-Toed Woodpecker Range in Montana (MNHP and MFWP 2017). Montana Natural Heritage Program and Montana Fish, Wildlife and Parks (MNHP and MFWP). 2017. Montana Field Guide. American Three-toed Woodpecker - Picoides dorsalis. Internet web- site: http://fieldguide.mt.gov/speciesDetail.aspx?elcode=ABNYF07110. Accessed on August 14, 2017. f. Map 3, American Three-Toed Woodpecker Observations on Salmon-Challis (Idaho Fish and Wild- life Information System [January 2017], USFS Natural Resources Information System Wildlife [April 2017]). August 14, 2017 3. Is There Substantial Concern for the Species’ Capability to persist Over the Long-term in the Plan Area Based on Best Available Scientific Information? Table 2. Status summary based on existing conservation assessments Entity Status/Rank (include definition if Other) NatureServe G5 - Demonstrably widespread, abundant, and secure. Global Rank NatureServe S4 - Not rare and apparently secure, but with cause for long-term concern (usually more than 100 occurrences) State Rank Idaho State IDAPA – protected non-game List Status Not an SGCN USDA Forest Region 4 sensitive Service USDI FWS Not listed as an endangered or threatened species in Idaho Other IUCN Red List Category: LC - Least concern Convention on International Trade in Endangered Species Protection Status (CITES): Appendix II Partners in Flight Watch List - Not listed (PIF 2016) Table 3. Status summary based on best available scientific information. Species (Scientific and Common Name): Picoides dorsalis [Three-toed woodpecker] Criteria Rank Rationale Literature Citations 1 B2 Recent occurrences of Picoides dorsalis have been documented on all Idaho Birds. 2017. American three- Distribution on ranger districts of the SCNF (Table 1; Map 3). The species breeds on the toed woodpecker. Internet web- Salmon–Challis Forest from March–November and visits or overwinters from December– site: https://idahobirds.net/distri- National For- February (Idaho Birds 2017). The predicted distribution map provided by bution/maps/woodpeckers/ameri- est IDFG (2005) indicates that P. dorsalis is broadly distributed throughout can-three-toed-woodpecker/. Ac- the Forest with some gaps, which is supported by occurrence data (Rank cessed on August 14, 2017. B2). IDFG (Idaho Department of Fish and Game) 2005. American three- toed woodpecker. Internet web- site: https://fishandgame.idaho.gov/ifwi Confidence in Rank: High, Medium, or Low s/cwcs/pdf/American%20Three- toed%20Woodpecker.pdf. Ac- cessed on August 14, 2017. 2 C Picoides dorsalis occurs as far north as Alaska and extends south through IDFG (Idaho Department of Fish Distribution in Canada and the lower western US, including the Cascade and Blue Moun- and Game) 2005. American three- surrounding tains of Washington, the Cascade, Blue, and Wallowa Mountains of Ore- toed woodpecker. Internet web- geographic gon, northern and central Idaho, the Rocky Mountains of western Mon- site: area tana, Wyoming, and Colorado, and parts of Utah, Nevada, Arizona, and https://fishandgame.idaho.gov/ifwi New Mexico (Leonard 2001; IDFG 2005; NatureServe 2017). Population s/cwcs/pdf/American%20Three- densities generally are low (Wiggins 2004). Thus, Picoides dorsalis has a toed%20Woodpecker.pdf. Ac- wide distribution outside SCNF, but occurs at low densities (Rank C). cessed on August 14, 2017. Leonard, D. L., Jr. 2001. Three-toed Woodpecker (Picoides tridactylus). In: A. Poole and F. Gill (editors). The Birds of North America, No. 588 Species (Scientific and Common Name): Picoides dorsalis [Three-toed woodpecker] Criteria Rank Rationale Literature Citations The Birds of North America, Inc., Philadelphia, PA. NatureServe. 2017. NatureServe Confidence in Rank: High, Medium, or Low Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. In- ternet website: http://explorer.na- tureserve.org. Accessed on August 14, 2017. Wiggins, D. A. 2004. American three-toed woodpecker: A tech- nical conservation assessment. Pre- pared for USDA Forest Service, Rocky Mountain Region, Species Conservation Project. 3 C The species is highly irruptive (i.e., participates in large, irregular migra- IDFG (Idaho Department of Fish Dispersal Ca- tion events) and colonizes disturbed (burned or diseased) forests across and Game) 2005. American three- pability the landscape coinciding with high concentrations of wood-boring insects toed woodpecker. Internet web- (Wisdom et al. 2000, IDFG 2005). Dispersal may be limited to some ex- site: tent by fire suppression and fragmentation, which eliminate potential https://fishandgame.idaho.gov/ifwi corridor habitats (Wiggins 2004), but given the species’ high mobility, s/cwcs/pdf/American%20Three- populations likely are able to readily disperse across landscapes (Rank C). toed%20Woodpecker.pdf. Ac- cessed on August 14, 2017. Wiggins, D. A. 2004. American three-toed woodpecker: A tech- nical conservation assessment. Pre- pared for USDA Forest Service, Rocky Mountain Region, Species Species (Scientific and Common Name): Picoides dorsalis [Three-toed woodpecker] Criteria Rank Rationale Literature Citations Conservation Project. Wisdom, M. J. et al. 2000. Source habitats for terrestrial vertebrates of focus in the Interior Columbia Confidence in Rank: High, Medium, or Low Basin: Broad-scale trends and man- agement implications. FS General Technical Report. 4 B The species typically occurs in low numbers (NatureServe 2017), making MNHP and MFWP (Montana Natu- Abundance on estimates of abundance difficult, and there is not enough data to deter- ral Heritage Program and Montana the Salmon– mine actual abundance on SCNF. Recent documented occurrences on the Fish, Wildlife and Parks). 2017. Challis Na- Forest are scarce (Table 1). Based on occurrences on SCNF and relative American Three-toed Woodpecker tional Forest abundance on nearby habitat in Montana (MNHP and MFWP 2017), rela- — Picoides dorsalis. Internet web- tive abundance is uncommon (Rank B), but confidence is medium due to site: http://fieldguide.mt.gov/spe- lack of data specific to the Forest. ciesDetail.aspx?elcode=AB- NYF07110. Accessed on August 14, 2017. NatureServe. 2017. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. In- ternet website: http://explorer.na- tureserve.org. Accessed on August 14, 2017. Confidence in Rank: High, Medium, or Low 5 D In general, population trends are difficult to estimate due to irregular mi- IDFG (Idaho Department of Fish Population gration events and colonization of disturbed areas (IDFG 2005). Global and Game) 2005. American three- Trend on the population trends are unknown, but most likely declining (NatureServe toed woodpecker. Internet web- Salmon–Challis site: Species (Scientific and Common Name): Picoides dorsalis [Three-toed woodpecker] Criteria Rank Rationale Literature Citations National For-
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