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Underwood, T. J., and S. G.
Sealy. In Press. UV reflectance of eggs of brown-headed
cowbirds (Molothrus ater) and accepter and rejecter
hosts. Journal of Ornithology.
Underwood, T. J.,
and S. G. Sealy. 2006a. Grasp-ejection in two small cowbird
egg ejecters: a test of the bill-size constraints assumption
of the evolutionary equilibrium hypothesis. Animal Behaviour
71:409-416.
Underwood, T. J.,
and S. G. Sealy. 2006b. Influence of egg shape on cowbird egg
discrimination in American Robins and Gray Catbirds. Ethology 112:164-173.
Underwood, T. J.,
and S. G. Sealy. 2006c. Parameters of Brown-headed Cowbird
Molothrus ater egg recognition and ejection in Warbling
Vireos Vireo gilvus. Journal of Avian Biology
37:457-466.
McLaren, C. M.,
T. J. Underwood,
and S. G. Sealy. 2006. Conflicting temporal changes in the
frequency and intensity of cowbird parasitism on four common
hosts in Ontario over 130 years. Condor 108:238-242.
Murphy-Klassen, H. M.,
T. J.
Underwood, S. G. Sealy, and A. A. Czyrnyj. 2005.
Long-term trends in spring arrival dates of migrant birds at
Delta Marsh, Manitoba, in relation to climate change. Auk
122:1130-1148.
Hinam, H. L., S. G. Sealy, and
T. J. Underwood. 2004. Hummingbird entanglements in
burdock (Arctium spp.) at Delta Marsh, Manitoba.
Canadian Field-Naturalist 118:85-89.
Underwood, T. J.,
S. G. Sealy, and C. M. McLaren. 2004. Experiments on egg
discrimination in two North American corvids: further
evidence for retention of egg ejection. Canadian Journal of
Zoology 82:1399-1407.
Underwood, T. J.,
S. G. Sealy, and C. M. McLaren. 2004. Eastern Wood-Pewees as
cowbird hosts: accepters but infrequently parasitized.
Journal of Field Ornithology 75:165-171.
Sealy, S. G., and
T. J. Underwood.
2004. Rejecters and accepters of cowbird parasitism among
the New World orioles (Icterus spp.). Ornitologia
Neotropical 15:331-347.
Underwood, T. J., and S. G.
Sealy. 2002. Adaptive significance of egg coloration,
Chapter 19. Pages 280-298 In Avian Incubation:
Behaviour, Environment and Evolution, D. C. Deeming, ed.
Oxford University Press, Oxford, UK.
Underwood, T. J.,
and R. R. Roth. 2002. Demographic variables are poor
indicators of Wood Thrush productivity. Condor 104:92-102.
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