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Article
Robert J. Smith, Auteur ; Margret I. Hatch, AuteurABSTRACT Over the last two centuries, a large and increasing number of non-native phytophagous insect species have become established in North America. In addition to the direct effects these insects have on their new host plants, indirect effec[...]
Article
Margret I. Hatch, Auteur ; Robert J. Smith, Auteur
Article
Margret I. Hatch, Auteur ; David F. Westneat, AuteurA common life history pattern in many organisms is that reproductive success increases with age. We report a similar pattern in house sparrows Passer domesticus, older individuals performed better than yearlings for most measures of reproductive[...]
Article
Margret I. Hatch, Auteur ; Robert J. Smith, Auteur ; Jennifer C. Owen, AuteurEarly arrival at the breeding grounds for migratory birds is associated with greater reproductive success. According to the condition-dependent arrival hypothesis, only those individuals in superior physiological condition are able to bear the c[...]
Article
Margret I. Hatch, Auteur ; Robert J. Smith, AuteurHematocrits may provide information about the physiological condition of birds, but, to be a useful measure, information is needed concerning how hematocrits vary among individuals and over time. We examined the repeatability of hematocrits in a[...]
