black-headed ibis threskiornis melanocephalus also oriental or indian white ibis and black-necked ibis, black and white wading

feathers ornithology wetland natural water wildlife flight green fly two pair threskiornithidae wading black blacknecked white indian oriental melanocephalus threskiornis ibis blackheaded background beak beautiful bill bird birding birds birdwatching branch bush colorful fauna feather flower forest island lanka mountain national native nature ornithologist park perched primeval south sri black-headed black-necked ibises