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Threatened and Endangered Species Habitat Assessment <br /> Two Rivers Parcels-Varra Companies <br /> Weld County, Colorado <br /> Table 2. Federally threatened, endangered, and candidate species potentially found in Weld County <br /> or potentially affected by projects in Weld County. <br /> Suitable <br /> Common Name Scientific Name Status* Habitat Habitat <br /> Present <br /> Mammals <br /> Preble's meadow jumping Zapus hudsonius preblei T Shrub riparian/wet meadows Yes-All <br /> mouse(Preble's) habitat would <br /> be avoided <br /> Birds <br /> Piping plover** Charadrius melodus T Sandy lakeshore beaches and river No habitat,no <br /> sandbars depletions <br /> anticipated <br /> Eastern black rail( Laterallus jamaicensis ssp. T Wetland and marsh habitat that No-All <br /> Jamaicensis contains a mix of wet,saturated, habitat would <br /> and some dry edges. Vegetation be avoided <br /> structure consists of dense <br /> overhead cover interspersed with <br /> very shallow water(<3 inches) <br /> Fish <br /> Pallid sturgeon** Scaphirhynchus albus E Large,turbid,free-flowing rivers No habitat,no <br /> with a strong current and gravel or depletions <br /> sandy substrate anticipated <br /> Insects <br /> Monarch butterfly Danaus plexippus C Dependent on milkweeds No-All <br /> (Asclepiadoideae)as host plants habitat would <br /> and forage on blooming flowers;a be avoided <br /> summer resident <br /> Plants <br /> Ute ladies'-tresses orchid Spiranthes diluvialis T Moist to wet alluvial meadows, No habitat <br /> (ULTC) floodplains of perennial streams, <br /> and around springs and lakes <br /> below 6,500 feet in elevation <br /> Western prairie fringed Platanthera praeclara T Mesic and wet prairies,sedge No habitat,no <br /> orchid** meadows depletions <br /> anticipated <br /> *E=Federally Endangered Species;T=Federally Threatened Species;C=Candidate Species. <br /> **Water depletions in the South Platte River may affect the species and/or critical habitat in downstream reaches in other <br /> counties or states. <br /> Source:Service 2022. <br /> Eastern Black Rail <br /> Species Background <br /> The eastern black rail was listed as a threatened species on October 8, 2020, under the ESA(see Federal <br /> Register Vol. 85, No. 196:63764-63803).The eastern black rail is dependent on wetland and marsh <br /> habitat that contains a mix of wet, saturated, and some dry edges around the periphery. The subspecies <br /> requires dense overhead cover and soils that are moist to saturated (occasionally dry) and interspersed <br /> with or adjacent to very shallow water (Service 2018). Plant structure is considered more important <br /> than plant species composition in predicting habitat suitability. Shallow pools that are 1-3 cm deep may <br /> be the most optimal for foraging and for chick-rearing. In Colorado they have been documented in <br /> ERO Project#21-266 7 <br /> =R0 Resources Corporation <br />