DOCUMENTATION
OF SUCCESSFUL INTER-SPECIFIC
NEST-SHARING IN ORNITHOLOGICAL LITERATURE
Except
for nest-sharing between Blue Tits and Great Tits – which is reported regularly – only a few other examples appear documented:
§A Pied Flycatcher/female Common Redstart in Sweden (1979)
§Mourning Dove/Yellow-billed Cuckoo
§European Robin/Willow Warbler
§European Robin/Pied Wagtail