Bibliography and Citations

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Bull E.L, Holthausen R.S, Marx D.B.  1990.  How to determine snag density.  Western Journal of Applied Forestry.  5(2):56-58.
Bull EL, Hayes MP.  2001.  Post-breeding season movements of Columbia spotted frogs (Rana luteiventris) in northeastern Oregon.  Western North American Naturalist.  61(1):119-123.  Available from https://ojs.lib.byu.edu/spc/index.php/wnan/article/view/28111
Bull E.L, Henjum M.G, Rohweder R.S.  1989.  Reproduction and mortality of great gray owls in Oregon (Proof of forthcoming article).  Northwest Science.  63(1):38-43.
Bull E.L, Hohmann J.E.  1994.  Breeding biology of northern goshawks in northeastern Oregon.  Studies in Avian Biology.  16:103-105.
Bull EL, Pedersen RJ.  1978.  Two methods of trapping adult pileated woodpeckers at their nest cavities.  North American Bird Bander.  3(3):95-99.  Available from https://sora.unm.edu/node/92403
Bull E.L, Peterson S.R, Thomas J.W.  Submitted.  Resource partitioning among woodpeckers in northeastern Oregon.  
Bull EL, Aubry KB, Wales BC.  2001.  Effects of disturbance on forest carnivores of conservation concern in eastern Oregon and Washington.  Northwest Science.  75(Special):180-184.  Available from https://research.wsulibs.wsu.edu/xmlui/handle/2376/995
Bull EL, Wright AL, Henjum MG.  1989.  Nesting habitat of flammulated owls in Oregon. Manuscript submitted to journals..  
Bull E.L, Henjum M.G.  1990.  Ecology of the great gray owl.  
Bull E.L, Hohmann J.E.  1993.  Breeding biology of northern goshawks in northeastern Oregon. No. G4.  
Bull E.L.  1989.  Pileated woodpecker: Dryocopus pileatus.  
Bull EL, Duncan JR.  1993.  Great gray owl (Strix nebulosa).  Birds of North America Online.    Available from http://bna.birds.cornell.edu/bna/species/041
Bull E.L, Holthausen R.S.  1993.  Habitat use and management of pileated woodpeckers in northeastern Oregon.  Journal of Wildlife Management.  57(2):335-345.
Bull E.L.  1980.  Resource partitioning among woodpeckers in northeastern Oregon.  :109pp.
Bull EL, Hohmann JE, Henjum MG.  1987.  Northern pygmy-owl nests in northeastern Oregon.  Journal of Raptor Research.  21(2):77-78.
Bull EL, Henjum MG, Rohweder RS.  1988.  Nesting and foraging habitat of great gray owls.  Journal of Raptor Research.  22(4):107-115.  Available from https://sora.unm.edu/node/53109
Bull EL, Wales BC.  2001.  Effects of disturbance on birds of conservation concern in eastern Oregon and Washington.  Northwest Science.  75(Special):166-173.  Available from https://research.wsulibs.wsu.edu:8443/xmlui/handle/2376/993
Bull EL, Carter BE.  1996.  Tailed frogs: distribution, ecology, and association with timber harvest in northeastern Oregon.    Available from http://www.fs.fed.us/pnw/pubs/pnw_rp497.pdf, http://www.biodiversitylibrary.org/item/165461#page/3/mode/1up
Bukowski BE, Baker WL.  2013.  Historical fire regimes, reconstructed from land-survey data, led to complexity and fluctuation in sagebrush landscapes.  Ecological Applications.  23:546-564.
Buell M.F, Buell H.F.  1975.  Moat bogs in the Itasca Park area, Minnesota.  
Buehler D.A, al. et.  1991.  Winter microclimate of bald eagle roosts on the northern Chesapeake Bay.  Auk.  108:612-618.
Buehler DA.  2000.  Bald eagle (Haliaeetus leucocephalus). Poole A, editor. Philadelphia: The Academy of Natural Sciences of Philadelphia and the American Ornithologists' Union.   p. 40.  Available from http://bna.birds.cornell.edu/bna/species/506
Buehler DA.  2000.  Bald eagle (Haliaeetus leucocephalus).  Birds of North America Online.  (506)  Available from http://bna.birds.cornell.edu/bna/species/506
Buechner H.K.  1953.  Some biotic changes in the state of Washington, particularly during the century 1853-1953.  Washington State College Research Studies.  21(2):154-192.
Budy P., Luecke C, Wurtsbaugh WA, Gross H.P, Gubala C..  1995.  Limnology of Sawtooth Valley Lakes with respect to potential growth of juvenile Snake River sockeye salmon.  Northwest Science.  69(2):133-150.