Tim Laman / Close up of feathers of the Nicobar pigeon (Caloenas nicobarica) native to islands of SE Asia and New Guinea region, captive

Philippe Clement / Nicobar pigeon (Caloenas nicobarica) perched in tree, native to the coastal regions from the Andaman and Nicobar Islands, India, captive

Juergen & Christine Sohns / Nicobar Pigeon (Caloenas nicobarica), Singapore Zoo, Singapore

Juergen & Christine Sohns / Nicobar Pigeon (Caloenas nicobarica), Singapore Zoo, Singapore

Michael D. Kern / Kaleidoscope pattern formed from picture of Nicobar Pigeon (Caloenas nicobarica) feathers.

Thomas Marent / Nicobar Pigeon (Caloenas nicobarica), Nicobar Islands, India

Michael D. Kern / Nicobar pigeon (Caloenas nicobarica) feather against black background.

Daniel Heuclin / Pied Imperial-pigeon / Nutmeg pigeon (Ducula bicolor) preening, captive, From Nicobar Islands to North Australia.

Daniel Heuclin / Pied Imperial-pigeon / Nutmeg pigeon (Ducula bicolor) preening, captive, From Nicobar Islands to North Australia.

Tim Fitzharris / Nicobar Pigeon (Caloenas nicobarica), Jurong Bird Park, Singapore

Steve Nicholls / Close up of feathers of Nicobar pigeon (Caloenas nicobarica) from south east asia

Kevin Schafer / Nicobar pigeon (Caloenas nicobarica) Nicobar Islands, India. Captive