Asian Openbill

The Asian openbill is relatively small for a stork, standing 68cm high and 81cm long. Both parents take turns incubating, and the eggs hatch after about 25 days. Hatchlings received 87 to 120g of food a day, while older nestlings received 272 to 386g a day (Wikipedia, general species account).

Birds ringed at Bharatpur in India have been recovered 800km east, and a bird ringed in Thailand was recovered 1,500km west in Bangladesh, which shows how far they range. The source read gives no plumage, habitat or diet detail and does not name Bhutan.