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Variation of heavy metals within and among feathers of birds of prey: effects of molt and external contamination.
TLDR
The concentration of Hg was significantly higher in feathers molted first, suggesting that levels in feathers reflect levels in the blood during formation, and that external contamination may have an important impact on the levels detected in the feathers. Expand
Can Excrement and Feathers of Nestling Songbirds Be Used as Biomonitors for Heavy Metal Pollution?
TLDR
It is concluded that excrement of great and blue tit nestlings can be used as a biomonitor for heavy metals (lead, cadmium, arsenic, and copper), whereas feathers appear only to be suitable for lead pollution. Expand
Relationships between metal concentrations in great tit nestlings and their environment and food.
TLDR
Exreta are a good monitor for the presence and concentrations of non-essential metals in the food and the environment of passerine birds and for five metals, concentrations in caterpillars to be significantly positively correlated with vegetation samples and between feathers and caterpillar for As and Pb. Expand
Avian Clock gene polymorphism: evidence for a latitudinal cline in allele frequencies
TLDR
Allelic variation in a region of the avian Clock orthologue which encodes a functionally significant polyglutamine repeat (ClkpolyQcds) is described within free‐living populations of two passerine birds, the migratory bluethroat and the predominantly nonmigratory blue tit. Expand
Brominated flame retardants and organochlorine pollutants in aquatic and terrestrial predatory birds of Belgium: levels, patterns, tissue distribution and condition factors.
TLDR
The results indicate that terrestrial birds may be more exposed to higher brominated BDE congeners than aquatic species. Expand
Heavy-Metal Concentrations in Female Laying Great Tits (Parus major)and Their Clutches
TLDR
The results seem to suggest that no special sampling strategies are required for most metals in laying female birds, and that the egg volume tended to decrease significantly as egg laying progressed. Expand
Shield Characteristics Are Testosterone-Dependent in Both Male and Female Moorhens
TLDR
In the moorhen, moorhens implanted with testosterone had higher intensities of ectoparasite infestations than control birds, but other indirect measures of immunocompetence did not differ significantly between the two categories of birds. Expand
Great and blue tits as indicators of heavy metal contamination in terrestrial ecosystems.
TLDR
It is suggested that tit (Parus) species, which have been important models in behavioral and ecological research, may be very useful as biomonitors for local contamination. Expand
Effects of heavy metal exposure on the condition and health of nestlings of the great tit (Parus major), a small songbird species.
TLDR
The results showed that nestlings were indeed exposed to large amounts of heavy metals, and nestling body mass and condition were significantly reduced at the most polluted site. Expand
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