Writhedhornbill

Eastern Hartlaub's duck, Blackbrook, 31.12.08

The different amount of white on the head was considered as a subspecies-wise characteristic, but I think that is no longer valid...
 
ISIS says that they are still considered two different subspecies, but Bl;ackbrook does not have it's birds listed on there
 
Looks like a different subspecies to me!
 

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Blackbrook Zoo (Closed)
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Writhedhornbill
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