Tanzanians need help with Frigatebird id

["Mike Carter" <>]

In case he missed this posting, I've forwarded this request to David James 
who knows this group well having lived for three years+ on Christmas Island 
where all three Australian species breed. David wrote a paper on their ID 
published in 2004 in BirdingASIA 1, 22-38.
However here are a few comments from me. It is a sub-adult bird but because 
it appears to have a wholly white head lacking any tawny colouration, it is 
not a fresh juvenile. The white spurs seem to me to be restricted to the 
sides of the breast not extending onto the underwing which suggests to me 
that it is not a Lesser Frigatebird. The bill doesn't look long enough for a 
Christmas Frigatebird so assuming that it is of Indian Ocean origin, 
(Ascension Island is in another ocean without a tropical waters link), my 
not very confident vote would be for Great Frigatebird.
Mike Carter
30 Canadian Bay Road
Mount Eliza  VIC 3930
Tel  (03) 9787 7136