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2018 Biological Resources Inventory Report <br /> 2.2.1.4.3 River Otter <br /> River otters (ST) prefer riparian habitats along perennial river systems and are known to occur along the <br /> South Platte River. River otters use beaver dens and lodges, brush piles, and muskrat dens in secluded <br /> areas for natal dens, rearing young throughout the spring and summer months (Fitzgerald et al. 1994). <br /> The Project would avoid direct impacts to the river otter and impacts to potential river otter breeding <br /> habitat along the South Platte River and its associated riparian area including potential natal dens. No <br /> impacts to the South Platte River, the river otter, or its habitat is anticipated. <br /> 2.2.1.5 Migratory Birds <br /> CPW shapefiles were consulted to identify any known potential Bald Eagle or Osprey nests located in or <br /> near the Project area. The closest documented Bald Eagle nest is located approximately 0.8 mile away <br /> from the Project area (CPW 201 c). Table 5 lists 24 species of migratory birds that should be considered <br /> as part of an effects analysis for this Project area according to IPaC output(Attachment 2). <br /> Table 5: <br /> USFWS IPaC-Identified Migratory Birds Likely to Occur in the Project area <br /> Common Name Scientiftc Name Season <br /> American Bittern Botaurus lentiginosus Breeding <br /> Bald Eagle Haliaeetus leucocephalus Year-round <br /> Black Rosy-finch Leucosticte atrata Year-round <br /> Brewers Sparrow Spizella breweri Breeding <br /> Burrowing Owl Athena cunicularia Breeding <br /> Dickcissel Spiza Americana Breeding <br /> Ferruginous Hawk Buteo regalis Year-round <br /> Golden Eagle Aquila chrysaetos Year-round <br /> Lark Bunting Calamospiza melanocorys Breeding <br /> Lewis's Woodpecker Melanerpes lewis Breeding <br /> Loggerhead Shrike Lanius ludovicianus Breeding <br /> Long-billed Curlew Numenius amenicanus Breeding <br /> Mountain Plover Charadrius montanus Breeding <br /> Peregrine Falcon Falco peregrinus Breeding <br /> Prairie Falcon Falco mexicanus Year-round <br /> Red-headed Woodpecker Melanerpes erythrocephalus Breeding <br /> Rufous Hummingbird Selasphorus rufus Migrating <br /> Sage Thrasher Oreoscoptes montanus Breeding <br /> Short-eared Owl Asio flammeus Wintering <br /> Swainson's Hawk Buteo swainsoni Breeding <br /> Virginia's Warbler Vermivora virginiae Breeding <br /> Western Grebe Aechmophorus occidentalis Breeding <br /> Williamson's Sapsucker Sphyrapicus thryroides Breeding <br /> Willow Flycatcher Empidonax traillii Breeding <br /> Tucson South Sand and Gravel Mine—Brighton,Colorado 13 <br />