At least “Merlin,” my eBird identifier says they are “rare” for this location, though I know there are manakins in Atenas and I have seen the grosbeak in nearby Alajuela, so I don’t think they are really that rare here! 🙂 They are a female Long-tailed Manakin (feature photo) and an immature or female Rose-breasted Grosbeak. And I believe the latter is an immature male because another poorer photo shows a touch of rose color coming on the breast and the females do not have that. NOTE: The name links above are to eBird descriptions. You can also see more of my photos of these in my bird GALLERIES: Long-tailed Manakin and the Rose-breasted Grosbeak galleries.
It was an overcast morning with no good light, thus the poor quality images when against the sky:
Long-tailed Manakin Female 
Rose-breasted Grosbeak Immature
Reusing, recycling, rethinking ~The Washington Post Article
¡Pura Vida!