References for additional crosses
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Anderson, R.F.V. 1977. Ethological Isolation and competition of allospecies in secondary contact. Amer. Nat. 111(981):939-949.
Aspinwall, N., J.D. McPhail, and A. Larson. 1993. A long-term study of hybridization between the peamouth, Mylocheilus caurinus and the redside shiner Richardsonius balteatus at Stave Lake, British Columbia. Canadian J. of Zool. 71(3):550-560.
Baker, M.C. and E.M. Baker. 1990. Reproductive isolation of female buntings: isolating mechanisms in a hybridizing pair of species. Evolution. 44(2):332-338.
Becker, J. 1995. Sympatry and hybridization between thrush nightingale (sic) Luscinia luscinia and nightingale L. megarhynchos around Frankfurt (Oder). Vogelwelt. 116(3):109-118.
Blair, C.M.G. 1961. Hybridization of Corvus albus and C. edithae. Ibis. 103a:499-502.
Braun, D., G.B. Kitto, and M.J. Braun. 1984. Molecular population genetics of tufted and black-crested forms of Parus bicolor. Auk. 101:170-173.
Buckley, P.A. 1969. Disruption of species-typical behavior patterns in F1 hybrid Agapornis parrots. Zeitschrift fur Tierpsychologie. 26:737-743.
Ceugniet, M., T. Aubin, A. Bernard-Laurent, & D. Soyez. 1999. Vocal signatures of the rally call of red-legged & rock partridges & of their hybrids. Comptes Rendus de lAcademie de Sciences - Serie III Sciences de la Vie. 322(10):887-895.
Corbin, K.W., C.G. Sibley, and A. Ferguson. 1979. Genetic changes associated with the establishment of sympatry in orioles of the genus Icterus. Evolution. 33(2):624-633.
Cox, J.B. and D.H. Close. 1977. Interbreeding of little and fairy terns. Emu. 77:28-32.
Danforth, C.H. 1950. Plumage in pheasant hybrids. Evolution. 4:301-315.
Davies, S. 1970. Patterns of inheritance in the bowing display and associated behaviour of some hybrid Streptopelia doves. Behaviour. 36:187-214.
Ford, J. 1975. Hybridization of splendid and turquoise wrens. Emu. 75:153-154.
Gelter, H.P., H. Tegelstr#om, and L. Gustafsson. 1992. Evidence from hatching success and DNA fingerprinting for the fertility of hybrid pied X collared flycatchers. Ibis. 134:62-68.
Gill, F.B. and B.G. Murrary, Jr. 1972. Discrimination behavior and hybridization of the blue-winged and golden-winged warblers. Evolution. 26:282-293.
*Grant, P.R. & Grant, B.R. 1992. Hybridization of bird species. Science. 256:193-197.
*------. 1997. Genetics and the origin of bird species. Proc. Natl. Acad. Sci. 94:7768-7775.
*Gray, A.P. 1958. Bird hybrids. Commonwealth Agricultural Bureaux. Farnham Royal, Bucks, England.
Hoffman, W., J.A. Wiens, and J.M. Scott. 1978. Hybridization between gulls (Larus glaucescens and L. occidentalis) in the Pacific Northwest. Auk. 95:441-458.
Hopkinson, E. 1930. Records of birds bred in captivity:additions. Avicultural Magazine. 4th Ser. 8:18-24.
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Ingolfsson, A. 1970. Hybridization of glaucous gulls Larus hyperboreus and herring gulls L. argentatus in Iceland. Ibis. 112:340-362.
Johnsgard, P.A. 1970. Intergeneric new world quail hybrids. Condor. 72:85-88.
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------. 1973. Grouse and quails of North America. University of Nebraska, Lincoln.
Johnston, D.W. 1971. Ecological aspects of hybridizing chickadees (Parus) in Virginia. Amer. Midland Nat. 85:124-134.
Johnstone, G.W. 1978. Interbreeding by Macronectes halli and M. giganteus at Macquarie Island. Emu. 78:235.
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Lorenz, K.Z. 1958. Evolution of behavior. Sci. Amer. 199:67-78.
Ma, W. and D. Lambert. 1997. Minisatellite DNA markers reveal hybridization between the endangered black robin and tomtit. Electrophoresis. 18:1682-1687.
Mayr, E. & L.L. Short. 1970. Species taxa of North American birds. Publications of the Nuttall Ornithological Club No. 9. R. Paynter ed. Cambridge.
Moore, W.S. and W.D. Koenig. 1986. Comparative reproductive success of yellow-shafted, red-shafted, and hybrid flickers across a hybrid zone. Auk. 103:42-51.
Niewoonder, J.A., H.H. Prince, and D.R. Luukkonen. 1998. Survival and reproduction of female Sichuan, ring-necked, and F1 hybrid pheasants. J. Wildlife Management. 62(3):933-938.
Pearson, S.F. and S. Rohwer. 1998. Influence of breeding phenololgy and clutch size on hybridization between hermit and Townsends warblers. Auk. 115(3):739-745.
Ramo, C. Hybridization between the scarlet ibis (Eudocimus ruber) & the white ibis (Eudocimus albus) in Venezuela. Colonial Waterbirds. 10:111-114.
Randi, E. and A. Bernard-Laurent. 1999. Population genetics of a hybrid zone between the red-legged partridge and rock partridge. Auk. 116(2):324-337.
Rensel, J.A. and C.M. White. 1988. First description of a hybrid blue x sage grouse. Condor. 90:716-717.
Risch, M. and L. Andersen. 1998. Non-random mating of crows (Corvus corone) in a hybrid zone of carrion crow (C. c. corone) and hooded crow (C. c. cornix). J. fier Ornithologie. 139(2):173-177.
Rounds, R.C. and H.L. Munro. 1982. A review of hybridization between Sialia sialis and S. currucoides. The Wilson Bulletin. 94:219-223.
*Sasa, M.M., P.T. Chippindale, & N.A. Johnson. 1998. Patterns of postzygotic isolation in frogs. Evolution. 52(6):1811-1820.
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*Sibley, C.G. & B.L. Monroe, Jr. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven.
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Tegelstrom, H. and H.P. Gelter. 1990. Haldanes rule and sex biased gene flow between two hybridizing flycatcher species (Ficedula albicollis and F. hypoleuca, AVES: MUSCICAPIDAE). Evolution. 44(8):2012-2021.
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