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

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  1. J

    Hertfordshire Bird Checklist

    Greylag and Barnacle Geese are on BOU CAt C for Herts just like Canada Geese Little Owl RN Parakeet Pheasant etc. I personally proved Cat C Barnacle Geese occur by reading Darvic rings from the BOU CAt C Beds population so they are not on the Herts List as just escapes. Thus it was my find of...
  2. J

    Hertfordshire Bird Checklist

    Only a quick scan not a proper check. County list is 306 cat A-C Joan
  3. J

    Hertfordshire Bird Checklist

    Greylag and Barnacle RN PArakeet Cat C introduced in county same as Little Owl Barnacle not accepted in county as Cat A Add Black and Red Throated Divers Pom and Gt Skua Hooded Crow Little Bunting Lesser Redpoll Blue Rock Thrush escape Richard Pipit subject to acceptance Tundra Bean def in...
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