Slate-colored Seedeaters at Parque Metropolitano

And speaking of seedeaters, Osvaldo Quintero sent in these photos of Slate-colored Seedeater taken yesterday at Parque Metropolitano. The birds, a flock of 10, were in a patch of bamboo by the first mirador on Mono Tití Road, about halfway up to the top.

Also photographed was this drab olive bird. We're calling it a juvenile Black-striped Sparrow, but feel free to leave any dissenting opinions in the messages field below.
[Update: Bill Adsett another possible identity for this bird is a Orange-billed Sparow of the juvenile denomination.]