The two sea eagles were discovered shortly after they died, something that the newspaper Skärgården first reported on.
- When we handle birds for research purposes, it can have unfortunate consequences.
In Sweden, we have been ringing since 1975 but have never seen anything like it, says Peter Hellström, sea eagle researcher.
Hunting fish and game - this is what the sea eagle looks like
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The white-tailed eagle has strong legs and a special claw to kill its prey.
Photo: Lisa Liljefors / SVT
The birds have been frozen, with their heads under the wing, and will be sent to SVA, the Swedish Veterinary Institute, for autopsy.
Feathers and samples of internal organs will be saved for the future.