• Publications
  • Influence
Corticosterone-binding proteins and behavioral effects of high plasma levels of corticosterone during the breeding period in the pied flycatcher.
  • B. Silverin
  • Biology, Medicine
  • General and comparative endocrinology
  • 1 October 1986
The results show that an elevation of plasma levels of corticosterone in adult pied flycatchers during the nestling period affects parental as well as territorial behavior. Expand
Large–scale geographical variation confirms that climate change causes birds to lay earlier
Trends in spring temperature varied markedly between study sites, and across populations the advancement of laying date was stronger in areas where the spring temperatures increased more, giving support to the theory that climate change causally affects breeding date advancement. Expand
Variation within and between birds in corticosterone responses of great tits (Parus major).
It is demonstrated that corticosterone responses to a stressor tend to be repeatable in individual great tits, and a method for quantifying variation in cortic testosterone responses for comparison with other birds in the future is provided. Expand
Sight of a predator can stimulate a corticosterone response in the great tit (Parus major).
The results indicate that the initiation of a corticosterone response in birds depends on whether or not a bird perceives that a stimulus is a threat, and illustrate the importance of not making generalised conclusions based on laboratory experiments. Expand
Effects of long-acting testosterone treatment on freeliving pied flycatchers, Ficedula hypoleuca, during the breeding period
It was shown that the song of the male pied flycatcher is dependent upon androgens, and the testosterone treatment prolonged territorial behaviour, and a higher percentage of nests without a feeding male during the nestling period was found in the experimental area. Expand
Testosterone, ticks and travels: a test of the immunocompetence-handicap hypothesis in free-ranging male sand lizards
It is demonstrated in a field experiment that male sand lizards exposed to elevated testosterone suffered from increased mass loss and tick load compared to control males, and the increased parasite load was statistically independent of the loss in body condition and is likely to be due to compromised immune function. Expand
Photoperiodic adaptation to breeding at different latitudes in great tits.
Once the rapid gonadal growth phase had begun it took about 6 weeks for the testes to reach maximal size in all three populations, and initially testicular size and plasma levels of LH were similar among the four groups. Expand
Ambient temperature effects on photo induced gonadal cycles and hormonal secretion patterns in Great Tits from three different breeding latitudes
The results indicate that integration of supplementary information, such as ambient temperature, with photoperiodic initial predictive information (day length), becomes progressively more important in maintaining the predictability of the breeding season with decreasing latitude. Expand
The Design of Artificial Nestboxes for the Study of Secondary Hole-Nesting Birds: A Review of Methodological Inconsistencies and Potential Biases
The types of descriptive data that should be included in the methods sections of relevant manuscripts are listed to improve the reliability and usefulness of research based on long-term studies of any secondary hole-nesting species using artificial nestboxes for breeding or roosting. Expand