Wood Thrushes and Yellow-bellied Sapsucker

Bill Adsett sent in the following reports:
On December 9 there were two Wood Thrushes at the house in Cerro Azul. They stayed close together while feeding in trees, and were constantly vocalizing. We never used to get woodthrushes up there (let alone singing ones), but last year one turned up and now two! Whats going on?
Also, if anyone still needs Yellow-bellied Sapsucker for Panama, there is one in Parque Metropolitano. I saw it today [December 12] close to the crane turnoff on the Mono Tití trail.