Upcher`s Warbler ? (1 Viewer)

[oguenaydin]

Hello,

Need help for this bird. Can it be a Upcher`s Warbler ?
Foto : 06/2020 Ankara

Thanks,

Ogün Aydın

 

[andyb39]

Eastern Olivaceous.

 

[KenM]

Eastern Olivaceous.

Andy Hi, why EO over UW?
Cheers

 

[lou salomon]

Andy Hi, why EO over UW?
Cheers

note p1 reaching well beyond tips to primary coverts.

 

[KenM]

note p1 reaching well beyond tips to primary coverts.

How does that reconcile with pp to tertial ratio, ie pp being 3/4 of the overlying tertials, surely EO is just half?

 

[lou salomon]

How does that reconcile with pp to tertial ratio, ie pp being 3/4 of the overlying tertials, surely EO is just half?

I'm measuring a pp of 65-70% which is exactly what elaeica EOW should have (only nominate pallida has around 50%), with Upcher's pp being around 75-80%.

 

[KenM]

I'm measuring a pp of 65-70% which is exactly what elaeica EOW should have (only nominate pallida has around 50%), with Upcher's pp being around 75-80%.

Quite right, I inadvertently placed the ruler on T2-to the highest feather on the covert bar.😮

…..just testing😉

 

[oguenaydin]

Thanks

 

[andyb39]

Andy Hi, why EO over UW?
Cheers

Hi Ken. The question ought to be why UW in a location where it doesn't occur!

Lou has rightly pointed out the long P1, but I would expect Upcher's to look more contrasting, with darker tertials and primaries, as well as showing a longer, fuller tail with a darker rear portion. Like Olive-tree, Upcher's has a pale wing panel too.

Upcher's is much easier to identify in the field as it behaves in a distinctive way (clumsy movements and lots of tail-waving/swishing and fanning).