Down collection was not found to have effect on the incubating Eiders, during these average weather conditions. Likewise, the enlarged clutches did not affect energy expenditure of incubating females or their hatching success.
Niðurstöður verkefnisins sýna að dúntekja og urptarstærð (2-9 egg) hafa lítil áhrif á afkomu æðarkollna á Íslandi, í það minnsta í venjulegu tíðarfari.