I received this email from Dr Martin Collinson regarding DNA analysis of the Rhyl Desert Wheatear.
Not great news on the Rhyl Desert Wheatear - its poo contained plenty of sand(!) but we can't PCR up any DNA. This sometimes happens with these samples, a bit hit and miss. We were processing 6 different birds and 4 worked, two didn't, so you're just unlucky. Thanks for collecting it though! It was a decent sized deposit and I would have expected to get something. Strangely it seems to be very hard to get DNA out of seaside poo, and I wonder if it's the salt or something.
Oh well, thanks for trying Martin. All's not lost though- perhaps Dr Paul Brewster's pellet may contain the key to unlocking the question of which race of Desert Wheatear our bird belongs to.