A few species, such as pied kingfishers and laughing kookaburras are cooperative breeders.
Each day as we were walking we saw much wildlife including hooded plovers, pied oyster-catchers, Cape Barren geese, Bennetts wallabies and thrillingly for me, a wombat.
Threatened by habitat loss due to urban growth, agriculture, and cattle grazing, the pied tamarin also moves from Endangered to Critically Endangered.
I have done almost no birding, except yesterday when I saw a Hooded Butcherbird sitting on a coconut frond, tilting back its head and ruffling its pied plumage as it whistled its loud, musical song.
For instance, five species of hornbills - Wreathed, Roufous, Brown, Great pied and Indian pied hornbills - are found there.
As yet another scorching summer has drawn to a close in Mumbai, one hears the haunting cry of the pied crested cuckoo.
However, both the pied and collared flycatcher females are dull brown.
One of the best known examples in vertebrates is the cooperative breeding system of the pied kingfisher, where less related secondary helpers invest less in feeding hatchlings.
They have been bred in colors of blue, yellow-green, white, and various pied shades.
Those species like the pied kingfisher and the Seychelles warbler, which are able to fledge many more young when assisted, are also the same species that are mostly likely to recognize close relatives.