Farmoor Gulls

Another evenings cachophony of courting Black-headed Gulls totalling ? - so estimated at 15-20,000 which is what I also reckoned last Sunday. Around 600 L B-backs, 10 Common, 1 tiny Herring Gull, 1 adult winter Little Gull hawking amongst a massive fly emergence and 1 adult Med Gull not bothered about much; thus showing the extent of hood reaching down the neck, in comparison to BH Gull, is still viewable when the rear of bird hidden by others in the roost (as this bird was initially). 1 Oystercatcher over F2 and 24 plus Pied's (no alba)taking the walking approach to harvesting the diptera feast along the causeway. Must dispute claim on Adam's excellent Birding Diary that Cormorants are "just not that attractive" (at least when seen in good light) and I leave it to others to decide whether this bird is a carbo or sinensis