AjaA shearwater of 27th April
This looks like a good candidate for Wedge-tailed Shearwater to me and Paul Leader who I have just discussed it with. The tail is not just rather long but there is proportionately more of the bird 'behind' the wings than in front compared with Short-tailed; also compare the tail length with the wing width. The real pointer for me, however, is the very long wings with the 'arm' held slightly forward and a bend at the carpal. To me the bird has a slender, rangy appearance, different from the rather compact cigar shape of Short-tailed.
I certainly think it would be worth submission to the RC for further consideration.
Mike Leven