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Showing results 1 to 25 of 1000
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Search: Posts Made By: jurek
Forum: Birds & Birding Yesterday, 23:31
Replies: 24
Views: 692
Posted By jurek
Now this may be because European birders use...

Now this may be because European birders use platforms based on ornitho or observado. Unfortunately cannot help you which is the one of choice in Portugal.
Forum: Conservation Thursday 16th January 2020, 20:07
Replies: 63
Views: 3,186
Posted By jurek
The danger of a prion disease can be avoided by...

The danger of a prion disease can be avoided by removing brain and spinal cord before consumption (as is already done with cattle and sheep).
Forum: Borneo (All Regions) Thursday 16th January 2020, 19:58
Replies: 16
Views: 331
Posted By jurek
If either-or, I would choose Sabah over Sulawesi....

If either-or, I would choose Sabah over Sulawesi. Even if the avifauna is technically more similar, Sabah has many rainforest and mountain species unlikely to be seen in Java or Bali. And a great...
Forum: Bird Behaviour Thursday 16th January 2020, 19:55
Replies: 4
Views: 147
Posted By jurek
Yep, probably somebody checked it. It should also...

Yep, probably somebody checked it. It should also happen naturally, e.g. when a bowerbird lives next to a rubbish dump.

But I could not find the answer, so maybe some Aussie member can help?
Forum: Bird Behaviour Wednesday 15th January 2020, 21:23
Replies: 4
Views: 147
Posted By jurek
What would a bowerbird do with unlimited bling?

A question I pondered on my holidays but did not dare to check.

What would a male bowerbird do if he could find unlimited number of shiny objects? Would it bury the bower under the bling, would it...
Forum: Conservation Tuesday 14th January 2020, 21:38
Replies: 17
Views: 620
Posted By jurek
I recognize important messages by the fact they...

I recognize important messages by the fact they go without lying and deception.
Forum: Vacational Trip Reports Tuesday 14th January 2020, 21:32
Replies: 23
Views: 1,311
Posted By jurek
Thanks for the report, Jan. It helped me...

Thanks for the report, Jan.

It helped me understand why I liked Oman and several other destinations more than others: because of freedom to move. No restrictions, no allowed trails, and no forking...
Forum: Birds & Birding Monday 13th January 2020, 22:24
Replies: 24
Views: 692
Posted By jurek
Well, how would you treat a person who has...

Well, how would you treat a person who has problems with keeping records and sometimes says he has seen shorebirds in a rainforest? ;) More seriously, big mistakes are also easily picked, but what...
Forum: Birds & Birding Monday 13th January 2020, 19:10
Replies: 24
Views: 692
Posted By jurek
Logically, treat eBird as a human being who...

Logically, treat eBird as a human being who sometimes identifies birds wrongly. Would you trust a human birder who makes mistakes as often as you see them in the ebird database? For me, ebird has...
Forum: Birds & Birding Monday 13th January 2020, 10:38
Replies: 24
Views: 692
Posted By jurek
EBird is in my opinion actually the least useful...

EBird is in my opinion actually the least useful of the three alternative projects: observado/waarneming and ornitho. Did you check these, John?

Currently, eBird is to be taken with a grain of...
Forum: Bird Taxonomy and Nomenclature Saturday 11th January 2020, 10:57
Replies: 25
Views: 2,085
Posted By jurek
I would not interpret local differences without a...

I would not interpret local differences without a large library of sounds from multiple localities. I know how incredibly variable are calls of Tawny Owls. I heard a variety of muffled and garbled...
Forum: Birds & Birding Friday 10th January 2020, 10:54
Replies: 6
Views: 312
Posted By jurek
With Ruddy Shelduck, BOU did not yet catch up...

With Ruddy Shelduck, BOU did not yet catch up there is a 1000s-strong feral population in the Netherlands, Germany, France and surroundings. It is much bigger and closer than the natural population...
Forum: Conservation Thursday 9th January 2020, 21:42
Replies: 63
Views: 3,186
Posted By jurek
Swedish scientist advocates eating humans to...

Swedish scientist advocates eating humans to combat climate change

https://bigthink.com/surprising-science/swedish-scientist-eating-humans-climate-change

Bon appetit! It is all for the greater...
Forum: Books, Magazines, Publications, Video & DVD Wednesday 8th January 2020, 11:59
Replies: 560
Views: 146,979
Posted By jurek
Thee is an online evaluation of recent splits of...

Thee is an online evaluation of recent splits of ungulates. It is interesting to see, how flimsy evidence was used to propose some bovid splits....
Forum: Computers, Birding Software And The Internet Wednesday 8th January 2020, 11:50
Replies: 12
Views: 540
Posted By jurek
It's a reminder. 'I got erra cos random people...

It's a reminder. 'I got erra cos random people post records'.
Forum: UK & Ireland County By County Patches Tuesday 7th January 2020, 20:46
Replies: 1
Views: 108
Posted By jurek
Difficult! Flight photo you can get in midsummer,...

Difficult!
Flight photo you can get in midsummer, when Woodcocks start roding long before it is fully dark.
Otherwise, maybe somebody will tell you if he knows a spot which it regularly visits.
You...
Forum: Bird Taxonomy and Nomenclature Friday 3rd January 2020, 21:20
Replies: 23
Views: 861
Posted By jurek
The mode of mate recognition in birds is a...

The mode of mate recognition in birds is a homoplasic trait, not an evolutionary conserved trait. It is well known that females of different species of birds use very different characteristics...
Forum: Bird Taxonomy and Nomenclature Friday 3rd January 2020, 12:57
Replies: 23
Views: 861
Posted By jurek
Its not only about vocalizations. It is general...

Its not only about vocalizations. It is general cherry-picking arguments favoring taxonomic change and ignoring arguments against status quo.

One could point further flaws. Most playback experiments...
Forum: Mammals Tuesday 31st December 2019, 15:20
Replies: 10
Views: 375
Posted By jurek
You got a positive piece of news that an animal...

You got a positive piece of news that an animal which was officially endangered few decades ago is expanding its range, and you keep looking for a negative edge of it.

For the sake of saying the...
Forum: Tips For New Birders Tuesday 31st December 2019, 15:04
Replies: 31
Views: 7,707
Posted By jurek
I have no musical ear whatsoever, so it is...

I have no musical ear whatsoever, so it is possible to learn bird songs without it.

Just in case: recognizing bird songs is not like recognizing human songs, because first: the tone of the sound is...
Forum: Mammals Monday 30th December 2019, 00:24
Replies: 10
Views: 375
Posted By jurek
Actually modeling of Polar Bear distribution in...

Actually modeling of Polar Bear distribution in future has already been done. The population will shrink ca 30% until 2050 basing on climate warming not being stopped. Fits the Vulnerable status, a...
Forum: Birds & Birding Friday 27th December 2019, 19:14
Replies: 333
Views: 58,741
Posted By jurek
Great read! This was probably asked before, but...

Great read!

This was probably asked before, but how John and others finance their Big Years?
Forum: Night Vision Friday 27th December 2019, 19:13
Replies: 30
Views: 4,061
Posted By jurek
My impression so far is that the night vision...

My impression so far is that the night vision field is still waiting for its Ford T moment. That is a model which would be both affordable and practically useful for an average person.

Please, keep...
Forum: Mammals Friday 27th December 2019, 19:08
Replies: 10
Views: 375
Posted By jurek
My understanding is that grizzly and polar bears...

My understanding is that grizzly and polar bears overlapped ranges in parts of the Arctic since forever (that is 19. century Western explorers).

There should be interesting things going in very High...
Forum: Bird Taxonomy and Nomenclature Wednesday 25th December 2019, 11:59
Replies: 125
Views: 6,508
Posted By jurek
Is Nashville Warbler found in Nashville or Garden...

Is Nashville Warbler found in Nashville or Garden Warbler in gardens?

Merry Christmas everyone! :D
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