Eurasian kestrels use readily nest boxes directly mounted under electric power lines. Consequently, nestlings are exposed since their embryonal development in the egg until fledging and hence represent a useful model to study the potential effects from power lines on wild animals.
The nestlings (5-31 day old) were collected from different nest boxes in the area of Rome. For each nest, the magnetic flux density was measured inside the box. Additionally, nestlings from non-exposed boxes (e.g. mounted on buildings) were collected.
In 2002, data from 100 nestlings out of 27 nests were recorded. In 2003, body condition and serum carotenoids were recorded from 164 nestlings out of 40 nests and oxidative stress parameters from 163 nestlings out of 39 nests.
Exposure duration: breeding season of 2002 or 2003
|magnetic flux density||0.6 µT||minimum||measured||-||in 2002|
|magnetic flux density||5.27 µT||mean||measured||-||± 1.01 µT; in 2002|
|magnetic flux density||20.44 µT||maximum||measured||-||in 2002|
|magnetic flux density||0 µT||minimum||measured||-||in 2003|
|magnetic flux density||4.72 µT||mean||measured||-||± 0.67 µT; in 2003|
|magnetic flux density||15.46 µT||maximum||measured||-||in 2003|
No significant relationship was found between the determined magnetic flux density and the examined variables.
The data indicate that 50 Hz magnetic fields from power lines have no effect on the body condition, serum carotenoids and oxidative stress parameters in Eurasian kestrel nestlings.