Hi Martin,
Plan to be back in Beidaihe about that time (early May) for my second visit next year. First time was April 2010 and saw heaps including Steller’s Sea Eagle which was a huge buzz. Solitary Hooded Crane the only Crane that appeared but plenty of waders, ducks and oodles of passerines like Daurian Redstart etc. Be happy to connect with any first time visitors and as I have reasonable Mandarin may be of assistance with taxis etc.
Cheers,
Jack.