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  1. No Access

    Article

    Carotenoid-based colouration and ultraviolet reflectance of the sexual ornaments of grouse

    Among the most familiar sexual signals are red, yellow, and orange sexual traits pigmented by carotenoids. Many birds can detect near-ultraviolet (UV) light, and UV signals can play key roles in mate choice. G...

    F. Mougeot, J. Martínez-Padilla, L. Pérez-Rodríguez… in Behavioral Ecology and Sociobiology (2007)

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    Article

    Organochlorine Contamination and Physiological Responses in Nestling Tree Swallows in Point Pelee National Park, Canada

    Point Pelee National Park in southwestern Ontario, Canada—a major migratory route and vital breeding area for many birds—has localized areas of organochlorine (OC) contamination from the 1950s and 1960s. Durin...

    Z. Papp, G. R. Bortolotti, J. E. G. Smits in Archives of Environmental Contamination an… (2005)

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    Article

    Thyroid Hormone Suppression and Cell-Mediated Immunomodulation in American Kestrels (Falco sparverius) Exposed to PCBs

    J. E. Smits, K. J. Fernie, G. R. Bortolotti… in Archives of Environmental Contamination an… (2002)

  4. No Access

    Article

    Courtship Behavior of Captive American Kestrels (Falco sparverius) Exposed to Polychlorinated Biphenyls

    S. A. Fisher, G. R. Bortolotti, K. J. Fernie… in Archives of Environmental Contamination an… (2001)

  5. No Access

    Article

    In Ovo Exposure to Polychlorinated Biphenyls: Reproductive Effects on Second-Generation American Kestrels

    K. J. Fernie, J. E. Smits, G. R. Bortolotti… in Archives of Environmental Contamination an… (2001)

  6. No Access

    Article

    Environmental and genetic variation in T-cell-mediated immune response of fledgling American kestrels

    We investigated genetic and environmental components of variance in avian T-cell-mediated immune response (CMI) through a cross-fostering experiment conducted on wild American kestrels (Falco sparverius). CMI was...

    J. L. Tella, G. R. Bortolotti, M. G. Forero, R. D. Dawson in Oecologia (2000)

  7. No Access

    Article

    Food-dependent benefits of hatching asynchrony in American kestrels Falco sparverius

    Food supply and hatching asynchrony were manipulated for 90 broods of American kestrels (Falco sparverius) during 1989–1991. We measured the growth and mortality of nestlings within four treatment groups (asynchr...

    K. L. Wiebe, G. R. Bortolotti in Behavioral Ecology and Sociobiology (1995)