Help 2nd bird id in Palenque, Chiapas (México) (1 Viewer)

[pbaptista]

In 12 May 2024

Thanks

 

[pbaptista]

This and your 2nd thread are Empidonax flycatchers. Puzzle them out using this:

Category:Empidonax - BirdForum Opus

www.birdforum.net

So let's, start.
1-excluded by observation location:
Willow Flycatcher
Yellowish Flycatcher
Pacific slope/Cordilleran Flycatcher
Gray Flycatcher
Pine Flycatcher
Dusky Flycatcher

2-excluded by color:
Yellow-bellied Flycatcher
Acadian Flycatcher

3-excluded by bill:
Hammond's Flycatcher

4-excluded by the length of the primaries:
Least Flycatcher
White-throated Flycatcher
Alder Flycatcher

Humm... Contopus virens?

 

[THE_FERN]

So let's, start.
1-excluded by observation location:
Willow Flycatcher
Yellowish Flycatcher
Pacific slope/Cordilleran Flycatcher
Gray Flycatcher
Pine Flycatcher
Dusky Flycatcher

2-excluded by color:
Yellow-bellied Flycatcher
Acadian Flycatcher

3-excluded by bill:
Hammond's Flycatcher

4-excluded by the length of the primaries:
Least Flycatcher
White-throated Flycatcher
Alder Flycatcher

Humm... Contopus virens?

Could be. Admit I only looked very briefly first time. On review, primaries do look too long for Empidonax. So wood-pewee is a good shout. If so, you can't definitely exclude western, but eastern would be my choice. (Looks like western is not listed for the area. Don't know how you could be sure of that.)

 

[pbaptista]

Could be. Admit I only looked very briefly first time. On review, primaries do look too long for Empidonax. So wood-pewee is a good shout. If so, you can't definitely exclude western, but eastern would be my choice. (Looks like western is not listed for the area. Don't know how you could be sure of that.)

I'm not sure, but taking into account that Contopus sordidulus is classified as rare in this location, I'll go by the rule that in case of doubt it's the most obvious. Thanks!

 

[THE_FERN]

I'm not sure, but taking into account that Contopus sordidulus is classified as rare in this location, I'll go by the rule that in case of doubt it's the most obvious. Thanks!

Yes but you have to take into account:

• how difficult the birds are to tell apart
• how many records there are from the location (many places are very underwatched)
• considering other records and what you know of the place yourself, how trustworthy the ebird records are

 

[cajanuma]

Like the bird in your other post, I think the best match here is Northern Tropical Pewee (C. bogotensis), which should be a pretty common year-round resident in the area

 

[pbaptista]

Like the bird in your other post, I think the best match here is Northern Tropical Pewee (C. bogotensis), which should be a pretty common year-round resident in the area

In my opinion, the length of the primaries invalidates this option.

 

[pbaptista]

Yes but you have to take into account:

• how difficult the birds are to tell apart
• how many records there are from the location (many places are very underwatched)
• considering other records and what you know of the place yourself, how trustworthy the ebird records are

Yes, I am aware of the limitations you mention, but it is the criterion given to me by experts, in any case when in doubt it is the most obvious. As I put the photos on the eBird list, it allows anyone who wants to use the observation to judge for themselves.

 

[Butty]

it is the criterion given to me by experts, in any case when in doubt it is the most obvious

Unwise experts. In any case when there's doubt, one doesn't know - and one is doing no more than making inspired/educated guesses, with the bird remaining unidentified - as so many birds do.