Black-headed Ibis

 

The Black-headed Ibis or Oriental White Ibis (Threskiornis melanocephalus) is a species of wading bird of the ibis family Threskiornithidae which breeds in the Indian Subcontinent and Southeast Asia from northern India, Bangladesh, Nepal and Sri Lanka east up to Japan. It builds a stick nest in a tree and lays 2–4 eggs.
It occurs in marshy wetlands inland and on the coast, where it feeds on various fish, frogs and other water creatures, as well as on insects. It walks about actively on marshy land probing with its bill into soft mud and often feeds in shallow water with its head momentarily submerged. Like storks and Spoonbills, it lacks a true voice-producing mechanism and is silent except for peculiar ventriloquial grunts uttered when nesting.

Pond Heron

Ardeola is a genus of small herons, typically 40–50 cm long with 80–100 cm wingspan. Most breed in the tropical Old World, but the migratory Squacco Heron occurs in southern Europe and the Middle East and winters in Africa.
These pond herons are stocky species with a short neck, short thick bill, typically buff or brownish back, and coloured or streaked foreneck and breast. In summer, adults may have long neck feathers. Ardeola herons are transformed in flight, looking very white due to the brilliant white wings.
Their breeding habitat is marshy wetlands. They nest in small colonies, often with other wading birds, usually on platforms of sticks in trees or shrubs. 2-5 eggs are laid.
These herons feed on insects, fish and amphibians. They are often found on small ponds giving rise to the English name shared by most of the species

Royal Spoon Bill

The Royal Spoonbill (Platalea regia) also known as the Black-billed Spoonbill, occurs in intertidal flats and shallows of fresh and saltwater wetlands in Australia, New Zealand, Indonesia, Papua New Guinea, and the Solomon Islands. It has also been recorded as a vagrant in New Caledonia. The Royal Spoonbill lives in wetlands and feeds on crustaceans, fish and small insects by sweeping its bill from side to side. It always flies with its head extended. Widespread throughout its large range, the Royal Spoonbill is evaluated as Least Concern on the IUCN Red List of Threatened Species.

Black-crowned night heron

 

The Black-crowned Night Heron (Nycticorax nycticorax), commonly abbreviated to just Night Heron in Eurasia, is a medium-sized heron found throughout a large part of the world, except in the coldest regions and Australasia.

 

Can you Imagine it Migrates to many countries. It happened to be also in India.