Barred Puffbird at Coclesito, a report by Venicio Wilson

During a recent visit to Coclesito, in the province of Colon, I found a Barred Puffbird singing in the gardens of the Rural House of Fundacion Alternativa. The bird was being mobbed and bombarded by other small birds like tanagers, flycatchers and hummingbirds. It responded to tape but was very shy which made it difficult to get a better picture.
I also found some birds that we normally associates to the Pacific slope savanna: White-tailed Kite, Lesser Yellow-headed Vulture and Southern Lapwings.

There was also this Empidonax flycatcher with a interesting longer bill. Any ideas as to its identity?