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<br />Appendix D <br />Biological Resources Background Information <br /> <br />Species Status* Habitat Potential For Occurance <br />Caspian tern none Nests in small colonies Not Present. No suitable habitat is <br />(nesting colony) inland and along the present. <br />Sterna caspia coast at fresh-water lakes <br /> and marshes. <br />western burrowing FSC,CSC Frequents open Low. No recorded occurrences in the <br />owl grasslands and immediate vicinity. Habitat quality is <br />Athene cunicularia shrublands with perches low. <br />hypugea and burrows. Preys upon <br /> insects, small mammals, <br /> reptiles, birds, and <br /> carrion. Nests and <br /> roosts in old burrows of <br /> small mammals. <br />long-eared owl CSC Inhabit open woodlands, Low. Minimal woodland and <br />Asia otus forest edges, riparian surrounding development likely <br /> strips along rivers, precludes presence. <br /> hedgerows, juniper <br /> thickets, woodlots, and <br /> wooded ravines and <br /> gullies. Breeding habitat <br /> must include thickly <br /> wooded areas for nesting <br /> and roosting with nearby <br /> open spaces for hunting. <br />short-eared owl CSC Found in open, treeless Low. May occur as a rare visitor in <br />Asia jlammeus areas with elevated sites winter. <br /> for perches and dense <br /> vegetation for roosting <br /> and nesting. Tule <br /> patches/tall grass needed <br /> for nesting and daytime <br /> seclusion. <br />black swift FSC,CSC Nests in riparian jungles Low. May forage in project area. <br />C yseloides niger of willow, often mixed Nesting habitat not present in project <br /> with cottonwoods with area. <br /> thick lower story. <br />Vaux's swift FSC,CSC Forages high in the air Not Present. Suitable nesting habitat <br />Chaetura vaux; over mostterrain and not present. May occasionally forage <br /> habitats but prefers over Study Area. <br /> rivers/lakes. Requires <br /> large hollow trees for <br /> nesting. <br /> <br />017 <br />