A rare migrant passing by, can you tell it?

I was recently birding and taking photos in Rancho Naturalista when a small flycatcher moved low in the hedge of porter-weed, catching my attention right away. Not many small flycatchers behave this way, so I had to kneel and try to catch it with my camera.

Soon I noticed it was an Empidonax, so I got more excited, since I had a feeling it was a rare migrant. I tried to see their wing bars, since only one suspect has them white… and yes, they were white, so next, I got as many photos as possible and then Harry, the hotel guide brought the Stiles and Skutch Costa Rican bird bible to confirm the number of primaries that separates better the Empidonax flycatchers and yes, it was a rare migrant (in Costa Rica), the Least Flycatcher (Empidonax minor).

Something to celebrate with a cup of coffee!

Notice the 6 primaries extending from the wing

Notice the 6 primaries extending from the wing, key to identifying this Empidonax Flycatcher

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