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Showing results 1 to 25 of 1000
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Search: Posts Made By: njlarsen
Forum: Bird Taxonomy and Nomenclature Yesterday, 18:41
Replies: 13
Views: 721
Posted By njlarsen
Laurent, in this last post I actually think your...

Laurent, in this last post I actually think your arguments sum to it being impossible to determine with certainty what Forskåhl's bird really represented without access to the original type (was it...
Forum: Bird Taxonomy and Nomenclature Yesterday, 18:28
Replies: 69
Views: 23,924
Posted By njlarsen
Narrow, stable hybrid zones with limitations on...

Narrow, stable hybrid zones with limitations on gene flow is an argument for species status; wide hybrid zone and gene flow through the zone is an argument against. That is why the details of the...
Forum: Chile Yesterday, 18:24
Replies: 2
Views: 53
Posted By njlarsen
https://ebird.org/map/trokin?neg=true&env.minX=&en...

https://ebird.org/map/trokin?neg=true&env.minX=&env.minY=&env.maxX=&env.maxY=&zh=false&gp=false&ev=Z&mr=1-12&bmo=1&emo=12&yr=all&byr=1900&eyr=2018

Chile is quite well covered in ebird I think

Niels
Forum: Bird Identification Q&A Yesterday, 12:51
Replies: 2
Views: 162
Posted By njlarsen
We were a group including a guide who knew the...

We were a group including a guide who knew the sounds. As such, the question is not if Forest Elaenia was there but if this photo caught one of them. I only have two shots of this bird with identical...
Forum: Olympus Yesterday, 02:44
Replies: 11
Views: 204
Posted By njlarsen
Contact oly directly. If they state that their...

Contact oly directly. If they state that their lens is waterproof, then I do not believe fogging should be possible

Niels
Forum: Bird Identification Q&A Yesterday, 02:09
Replies: 2
Views: 162
Posted By njlarsen
Flycatcher Darien Panama

I believe this to be a Forest Elaenia - anyone agree or disagree? I willingly admit to not getting every flycatcher right ...

Niels
Forum: Panasonic Tuesday 20th February 2018, 21:15
Replies: 84
Views: 4,652
Posted By njlarsen
With my G85 and PL lens there is a little bit of...

With my G85 and PL lens there is a little bit of play. In practical terms it has not mattered so far - the setup has received light rain several times.

Niels
Forum: Olympus Tuesday 20th February 2018, 20:30
Replies: 11
Views: 204
Posted By njlarsen
Did you come out from a room with strong AC into...

Did you come out from a room with strong AC into a humid environment or visa versa?

My immediate reaction is that you should not have condensation on the inside even under such conditions with a...
Forum: Panama Tuesday 20th February 2018, 18:54
Replies: 4
Views: 84
Posted By njlarsen
A 1992 book obviously is in serious need for...

A 1992 book obviously is in serious need for taxonomic update and it is an old style field guide, but I think it was the same I used first time I visited Panama, and most birds were recognizable....
Forum: Bird Taxonomy and Nomenclature Tuesday 20th February 2018, 04:19
Replies: 69
Views: 23,924
Posted By njlarsen
Thank you. How about some places like...

Thank you. How about some places like Hattah-Kulkune (spelling) and little desert in the borderlands between Victoria and Southern Australia, and Sundown NP in Queensland - Can anything be said about...
Forum: Bird Identification Q&A Tuesday 20th February 2018, 00:52
Replies: 3
Views: 179
Posted By njlarsen
Thanks a lot! Niels

Thanks a lot!

Niels
Forum: Bird Name Etymology Tuesday 20th February 2018, 00:52
Replies: 9
Views: 265
Posted By njlarsen
I believe that to a large extent, wintering birds...

I believe that to a large extent, wintering birds are migrans. Don't aegyptius become rather rare in Egypt in Winter? Is it known when he took his bird?

Niels
Forum: Bird Taxonomy and Nomenclature Monday 19th February 2018, 23:41
Replies: 69
Views: 23,924
Posted By njlarsen
Is there anywhere where a reasonably precise map...

Is there anywhere where a reasonably precise map can be found as to where the two Fairywren species (Variegated/Purple-backed) can be found?

Thanks
Niels
Forum: Information Wanted Monday 19th February 2018, 20:11
Replies: 9
Views: 306
Posted By njlarsen
I am not sure if March is still winter enough,...

I am not sure if March is still winter enough, but Crystal River area might be worth looking into? a place to stay, birdwatch, swim with manatees, etc in winter time. Disclaimer: I have never been...
Forum: Bird Identification Q&A Monday 19th February 2018, 18:33
Replies: 3
Views: 179
Posted By njlarsen
Bump - anyone with any input? Niels

Bump - anyone with any input?

Niels
Forum: Bird Identification Q&A Sunday 18th February 2018, 22:03
Replies: 3
Views: 179
Posted By njlarsen
2 hummingbirds Panama

Hello all,
these photos from Torti, eastern end of Panama Province, Panama.

The one with white on the back I am pretty sure is a Long-billed Starthroat, but would like confirmation.

The second...
Forum: Bird Identification Q&A Saturday 17th February 2018, 04:10
Replies: 2
Views: 159
Posted By njlarsen
When it come to what is most often seen, I think...

When it come to what is most often seen, I think the best option today is ebird.org. Go to this page, https://ebird.org/explore - then select bar charts, and on the next page select first your state...
Forum: Bird Identification Q&A Saturday 17th February 2018, 01:15
Replies: 10
Views: 322
Posted By njlarsen
Thank you Eduardo, the reserve is in the eastern...

Thank you Eduardo,
the reserve is in the eastern end of Panama Province (a little west of the town of Torti). Everything I can find about Scarlet-browed Tanager says that it is much further east,...
Forum: Panasonic Friday 16th February 2018, 20:37
Replies: 94
Views: 12,442
Posted By njlarsen
Thanks. Given that these two images are different...

Thanks. Given that these two images are different subspecies there might be room for both.

Niels
Forum: Mammals Friday 16th February 2018, 19:49
Replies: 3
Views: 346
Posted By njlarsen
Thank you both. With the Wiki descriptions of...

Thank you both. With the Wiki descriptions of habitat, the second of the two seems a better choice.

Niels
Forum: Bird Name Etymology Friday 16th February 2018, 19:41
Replies: 26
Views: 762
Posted By njlarsen
The Clements list (which actually starts with the...

The Clements list (which actually starts with the AOU/AOS rules and committee decisions) and the IOC list both can be downloaded on the web. Choose one of them and use whatever the chosen list uses...
Forum: Bird Identification Q&A Friday 16th February 2018, 16:04
Replies: 10
Views: 322
Posted By njlarsen
Canopy Camp gives people staying there a...

Canopy Camp gives people staying there a checklist. This species is on their list of birds they see outside of the camp itself.

Niels
Forum: Panasonic Friday 16th February 2018, 16:01
Replies: 94
Views: 12,442
Posted By njlarsen
Good for you. You commented on my White-headed...

Good for you. You commented on my White-headed Wren image: that one was taken using iso 5000

Niels
Forum: Bird Name Etymology Friday 16th February 2018, 00:54
Replies: 26
Views: 762
Posted By njlarsen
In many ways, languages develop ........... Niels

In many ways, languages develop ...........

Niels
Forum: Bird Identification Q&A Thursday 15th February 2018, 19:11
Replies: 10
Views: 322
Posted By njlarsen
Sulphur-rumped Tanager seems to be a rarely...

Sulphur-rumped Tanager seems to be a rarely observed or at least photographed species: no images in our gallery, 2 in Neotropical birds online, 1 in IBC.

Niels
Showing results 1 to 25 of 1000
 


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