Young Black-headed Saltator
Many thanks to Paco Madrigal of Cotinga Tours who corrected the identity of this bird. The original post called this bird a Buff-throated Saltator but it is, of course, a juvenile Black-headed Saltator, which, just to confuse novice neotropical birders, have a buffy patch on their throat!
This post has been submitted to Bird Photography Weekly #31. Go check it out!