Great Myna
Acridotheres grandis
It is black with elongated forehead feathers, forming a frontal crest that may curl backwards. Its beak and feet are yellow. It has white from the vent to the tip of the tail and a white wing patch.
ID text from Wikipedia, CC BY-SA 4.0
Jungle Myna
Acridotheres fuscus
Jungle mynas are 23-centimetre (9.1 in) long and have grey plumage, darker on the head and wings. The sexes are indistinguishable in plumage. A large white wing patches on the base of the primaries becomes conspicuous in flight, and the tail feathers are broadly tipped in white. There is a tuft of feathers on the forehead arising at the base of the bill. The bill and legs are bright yellow, and there is no bare skin around eye as in the common myna and the bank myna. The base of the beak is dark in adults with a shade of blue at the base of the lower mandible.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
Learn this pair in BeakBrain
Photo and call practice, free in any browser.
Play BeakBrainPhotos and recordings are credited to their authors under the licence shown. Full profiles: Great Myna and Jungle Myna.