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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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    Skylark singing to avoid Sparrowhawk attack

    An unseasonal burst of skylark song in the grey October sky near Holmfirth, West Yorkshire, attracted my attention. I watched a fast aerial pursuit of a skylark by a male sparrowhawk (Accipier nisus) during which the lark repeatedly gave a short but loud and full burst of song. The pursuit...
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    Identify these bins please

    Can anyone identify the make and model of these binoculars used by Jane Goodall, the English naturalist? The photo was taken c. 1960 when she was studying chimpanzees in Tanzania at age 26. More info on Jane Goodall here https://www.thextraordinary.org/jane-goodall#biography
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    Status of Yellow Crowned Bishop

    Birding today at the Aveiro marshes near Salreu in northern Portugal I saw at least two flocks of c. 10 birds in each of mixed male/female/prob young yellow-crowned bishops roaming amongst the reedbeds and rice paddies, and so appeared to be established and common here. I can’t find much about...
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    Zeiss Jena Jenoptem quality testing

    A current thread (lemons) on the scope forum had me thinking about binocular quality control. Back in the mid 1970s I bought a pair of Zeiss Jena Jenoptem 10x50 binoculars - my first decent optics. After comparing the five or so examples which were in stock in the shop (in London, but can't...
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    TV nest cameras and nest failure

    Watching the BBC Springwatch series again recently I was beginning to notice how many nests that have been rigged for TV cameras fail. We saw the Peregrines on Salisbury cathedral who didn't incubate the clutch properly (only one egg hatched, but also the RSPB 'orphan' chick from Shropshire was...
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    Seeing is believing

    As a user of several 'alpha' binoculars and scope I am becoming more and more convinced that we see and experience the optics and mechanics of our instruments depending on what our brain tell us rather than what is actually happening. For instance, if we are itching to buy the latest...
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    Leica Ultravid 'sharpness' - advice please

    Would any of the optics enthusiasts here be able to offer any advice on the following please?. A couple of years ago I returned a pair of original Ultravid 8x32 (i.e. not the HD ones) back to Leica for attention to the notchy focus wheel that had never stopped bugging me even after 7 years of...
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    Charca de Suarez, Granada Coast

    Visited this lovely little reserve on the edge of Motril, the other day. I had not heard of it until I read the article on the Andalucia Bird Society website, so went along and had a look. There seems to have been a release scheme here for Crested Coot as there were several birds with numbered...
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    Winter raptors in the Algarve

    Hi. I'm staying near Tavira in the Algarve and have been out on the salt pans today. I glimpsed what I am sure was a Hobby today but was not expecting to see this species in the winter here. Does anyone know if the Hobby occurs around Tavira at this time of year? thanks Peter
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    Has Bird Ringing/Banding had its day?

    I'm not trying to be deliberately provocative here as I know there are many dedicated bird ringers all over the globe who put a lot of effort into this but, is it really a modern scientific process any longer?. How many new discoveries are being made as a result of bird ringing these days?. I...
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    New owner of Ultravid 8x32

    Hi all. I have just bought a new pair of Ultravid 8x32 bins today, having set my heart on a pair at the Birdfair two years ago. I have been out birding today and am delighted that they have lived up to my expectations - except for the Focus Wheel Thing. I am a little disappointed about the...
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    Slovakia Birding

    I'm off with some pals to Slovakia later in the year on a birding/wildlife trip. Going in to Bratislava and on from there. Will be heading for the Tatra mountains in the north east most likely. Has anyone been there and can give any advice on good sites or areas to head for?. All info...
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