Authors
  • Barber, Colleen A.
  • Robertson, Raleigh J.
  • Boag, Peter T.
Universities

Summary

We assessed the frequency of extra-pair paternity (percentage of broods with a least one extra-pair young) in 25 families of tree swallows nesting in natural cavities and compared it to that in a nestbox.

Methodology

Next searches and caught adults in basket traps and mist nets to mark chest feathers and take blood samples