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Unknown ID on Ecuadorian Tyrannulets of Foothillforest (1 Viewer)

Daan van der hoeven

Active member
Hi all,

Maybe you guys can help me ID these Ecuadorian Bristle tyrants.
The first picture was taken on the west slope (around 1300 m), I'm thinking Marble-faced given the whitish wingbars.
But the next two pictures are from the east slope (same elevation) and the bird has real buffy/cinnamon wingbars so I am thinking Variegated.
For the last picture I am thinking of Ecuadorian Tyrannulet, but not quite sure.

Thanks in advance!

Daan van der Hoeven
 

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THE_FERN

Well-known member
Well here goes nothing...

I think the first 3 are slaty-capped flycatcher. The wing spots look amber/orange coloured on my monitor, and I think bill shape [long, pointy] is better for that species. Variegated bristle-tyrant would have fuller orange wing bars, and marble-faced should (usually) have clear yellow bars not appearing as spots. The last I think is plumbeous-crowned tyrannulet but I'm not certain. This because I see a dark ear patch with a pale arc outside this, little to no white supercilium and I think crown colour is better for this species.
 

Daan van der hoeven

Active member
Well here goes nothing...

I think the first 3 are slaty-capped flycatcher. The wing spots look amber/orange coloured on my monitor, and I think bill shape [long, pointy] is better for that species. Variegated bristle-tyrant would have fuller orange wing bars, and marble-faced should (usually) have clear yellow bars not appearing as spots. The last I think is plumbeous-crowned tyrannulet but I'm not certain. This because I see a dark ear patch with a pale arc outside this, little to no white supercilium and I think crown colour is better for this species.
Well Thanks!
I agree on the first three pictures being Slaty-capped, the difference in wingbar colour is probably a difference in subspecies.
However I am not quite sure on the last bird too, for comparison I added two pictures of plumbeous crowned where you can see a clear difference in headpattern while with the first one it does quite match. I already excluded Marble-faced (lack of marbling in face), Ecuadorian Tyrannulet and ashy headed.

Thanks for your opinion,

Daan van der hoeven
 

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THE_FERN

Well-known member
Well Thanks!
I agree on the first three pictures being Slaty-capped, the difference in wingbar colour is probably a difference in subspecies.
However I am not quite sure on the last bird too, for comparison I added two pictures of plumbeous crowned where you can see a clear difference in headpattern while with the first one it does quite match. I already excluded Marble-faced (lack of marbling in face), Ecuadorian Tyrannulet and ashy headed.

Thanks for your opinion,

Daan van der hoeven
Suggest "plumbeous crowned one" is actually Marble-faced Bristle-tyrant. We can see the big whitish supercilium. It forms part of a whitish face mask which includes a well demarcated dark auricular patch. The grey we can see on the crown is paler paler than what we'd expect for plumbeous-crowned. Although the lower mandible of this species is often pale, the bill can be all dark as here.

I think "plumbeous crowned two" is actually yellow-olive flycatcher. You can see the lower mandible is pale coloured whereas it would be all dark if it were plumbeous-crowned. I think the bill shape is wrong for the tyrannulet (Note also the greyish throat etc).
 

Thibaud

Well-known member
I agree with THE_FERN on all.
The only one that's bugging me is "plumbeous-crowned one". It's the reference image for the species in ebird, and I'd expect Andrew Spencer to know his stuff, but I agree it doesn't have a Phyllomyias look to it. In fact, the ebird photos for that one seem to represent three or four species!
Daan, I think you now have the best photo of that species on eBird!

I know Àlex, who took the other one, (which does look like a Tolmomyias), I'll drop him a note.
 
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THE_FERN

Well-known member
I agree with THE_FERN on all.
The only one that's bugging me is "plumbeous-crowned one". It's the reference image for the species in ebird, and I'd expect Andrew Spencer to know his stuff, but I agree it doesn't have a Phyllomyias look to it. In fact, the ebird photos for that one seem to represent three or four species!
Daan, I think you now have the best photo of that species on eBird!

I know Àlex, who took the other one, (which does look like a Tolmomyias), I'll drop him a note.
Well I'm reassured by that Thibaud. By now you've probably more field experience of these things even than Josh... [lucky so-and-so]
 

Thibaud

Well-known member
Well I'm reassured by that Thibaud. By now you've probably more field experience of these things even than Josh... [lucky so-and-so]
Hah I wish!

Meanwhile, Àlex has sent me a couple more photos of his bird (see attached).

Looks good for Yellow-Olive, no? Would be the peruvianus subsp, I believe.
 

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THE_FERN

Well-known member
Hah I wish!

Meanwhile, Àlex has sent me a couple more photos of his bird (see attached).

Looks good for Yellow-Olive, no? Would be the peruvianus subsp, I believe.
Yes most likely. Depending on where these are from, probably peruvianus (SE) or confusus (NE). Hopefully altitude rules out similar things like Yellow-margined fly, but if not we'd need a decent shot of the wings.

(There seems to be consensus that "yellow-olive fly" is actually multiple species. Certainly plumage variations suggests this.)
 

Thibaud

Well-known member
Yes most likely. Depending on where these are from, probably peruvianus (SE) or confusus (NE). Hopefully altitude rules out similar things like Yellow-margined fly, but if not we'd need a decent shot of the wings.

(There seems to be consensus that "yellow-olive fly" is actually multiple species. Certainly plumage variations suggests this.)
This was in the north, in the Alto Mayo. I know the spot (the famous "llanteria"), and while it very much has a premontane feel, it's only around 1400 msnm, so still a bit low to be completely sure. Looking et ebird barcharts, there are a bunch of Yellow-olive sightings, vs only a couple of Yellow-margined records.

Meanwhile I definitely agree about Yellow-olive needing to be split. The first ones I ever saw were in Mexico, and they look nothing like the birds I saw last year.
 

THE_FERN

Well-known member
This was in the north, in the Alto Mayo. I know the spot (the famous "llanteria"), and while it very much has a premontane feel, it's only around 1400 msnm, so still a bit low to be completely sure. Looking et ebird barcharts, there are a bunch of Yellow-olive sightings, vs only a couple of Yellow-margined records.

Meanwhile I definitely agree about Yellow-olive needing to be split. The first ones I ever saw were in Mexico, and they look nothing like the birds I saw last year.
Sorry: I'm not clear which of your photos is which. If the latest are the same as "plumbeous-crowned two" then we can be sure it's not yellow-margined.
 

Thibaud

Well-known member
Sorry: I'm not clear which of your photos is which. If the latest are the same as "plumbeous-crowned two" then we can be sure it's not yellow-margined.
Yes, exactly, they're two more photos of the same bird, ie "plumbeous-crowned two".
Àlex thanks you for the correction (while being gutted at having lost a lifer hehe), he'll fix the ID.
 

Daan van der hoeven

Active member
Glad to see this analysis develop on!!!

This was in the north, in the Alto Mayo. I know the spot (the famous "llanteria"), and while it very much has a premontane feel, it's only around 1400 msnm, so still a bit low to be completely sure. Looking et ebird barcharts, there are a bunch of Yellow-olive sightings, vs only a couple of Yellow-margined records.

Meanwhile I definitely agree about Yellow-olive needing to be split. The first ones I ever saw were in Mexico, and they look nothing like the birds I saw last year.
I definitely saw the bird in a pre montene feel, scenes as white winged tanager and white-plumed antbird on the same site were not unusual .
The bird in question also has a kind of streaked under site, I never really took a close eye to flycatchers on trips so i am sorry for the leek phrasing. but it really stands out in comparison to the second picture seen here:
Hah I wish!

Meanwhile, Àlex has sent me a couple more photos of his bird (see attached).

Looks good for Yellow-Olive, no? Would be the peruvianus subsp, I believe.


cheers,

Daan
 

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