Things have developed with our Short-tailed Shearwater sightings off Kuwait and we now have six confirmed (by Bob Flood) individual birds (there were seven previous individuals recorded in the WP before our trip). Seems like there has been a regional influx into the NW Indian Ocean and the Persian Gulf with a flock of 14 in Bangladesh, birds in India, up to nine 'Short-tailed-types' in Kuwait Bay in the last two weeks and the first record also for the UAE. Hopefully will do a proper write up on this for a regional journal (hopefully Sandgrouse) with Bob and other Middle East/ Indian birders but in the meantime here is the link to Bob and Ashley's identification paper on Short-tailed Shearwater HERE and an introduction to our six birds with their diagnostic bill proportions. Very simply a Shortie has a bill ratio which roughly equates to a 30% tube, 30% mid-section and 40% unguis. In the images the variation between individuals is shown but all fall within variation of Short-tailed except for bird 6 which is marginal but can be confirmed on the structure and plumage indications (rounded head, steep forehead, pale chin, more compact) and underwing colouration which is more subdued than Sooty Shearwater.
Main images below are mine, bill measurements and bill photos by Vince and bird 6 in flight by Omar.
BIRD ONE