At one point of time, this was found a plenty in India - about a pair every 10sq km. It is now assumed to be less than 2000 in the wild.
"The adult plumage is white, with black flight feathers in the wings. The white plumage however usually appears soiled due to the habits of the birds. The bill is slender and long and the tip of the upper mandible is hooked. The nostril is an elongated horizontal slit. The feathers on the neck are long and form a hackle. The wings are pointed with the third primary being the longest. The tail is wedge shaped. The claws are long and straight and the 3rd and 4th toes are slightly webbed at the base. The bill is black in the nominate population but is pale or yellowish in the smaller Indian ginginianus, but this variation may need further study. The facial skin is yellow and crop is unfeathered. Young birds are blackish or chocolate brown with black and white patches". - Wikipedia
This bird, also uses stone to crack open an egg. The only known proof of a bird, using tools.