Well, we delivered the dead common buzzard to Tony T at CEH. He palped it knowledgeably and made two brief announcements:  it is a young bird  it it so far gone that its gonads will have withered. There's such a thing as too much information....
Anyway, we trolled round the Nature Reserve and found lots of Marsh Tits (pictured above), plus a smattering of other species that we don't find much or at all in the parish of Haddenham: Nuthatch, Treecreeper, Coal Tit.
But no Lesser Spotted Woodpecker. Apparently there is only one left in the whole wood, poor lonely sod.
So, onwards and upwards. All'assalto, i miei prodi! Tomorrow I am nestbox-making. It's wonderful to think that all those years of education and training, costing the taxpayer zillions of pounds, have led to this moment: driving nails into pieces of marine ply.