I believe that this little bird we saw in Costa Rica’s Danaus Ecocentre is a female blue crowned manakin. It’s not at all blue, I hear you say. It seems the female is not, whereas the male has a beautiful iridescent cian cap
This picture from Flikr would seem to confirm the identification. The more obvious green manakin is theoretically only in Panama, but then that’s not far from Costa Rica.
Anyone got any better identification?