THE BIRDS OF AUSTRALIA. 
The strange distribution of this species, no form being known from the 
Indian Ocean, suggested that M. tenuirostris filled its place in that Ocean. 
I have however seen two specimens purporting to come from there, and though 
they are immature are easily seen to represent another form. A young 
one is quite remarkable in that it shows light rufous tips to the feathers 
throughout, a feature I have not seen in any immature from either the 
Atlantic or Pacific Oceans. 
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