Query: what are elephant birds, Extinct birds of Indian Ocean islands, or Birds discovered  in 1968?
Domain: animals
Relevant documents:
Rodrigues starling
Cheke's wood rail
Marianne white-eye
Broad-billed parrot
White-eyed river martin
Réunion owl
Grey grasswren
Seychelles parakeet
Mullerornis
Mindanao miniature babbler
Coua berthae
Fine-barred piculet
Mascarene coot
Aldabra brush warbler
Mauritius starling
Mascarene parrot
Vorombe
Aepyornis
Delalande's coua
Ampoza ground roller