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

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  1. KnockerNorton

    When Do Blue Tits Start Nesting Process?

    Well, what do I know - one bird nest-building in a box this morning!
  2. KnockerNorton

    When Do Blue Tits Start Nesting Process?

    They start inspecting holes in mid february, and will start building in late March (depending on where you are and what the spring is like). Earlier in the south, later in the north. They time breeding to coincide with the emergence of moth caterpillars in May. I ring blue tit broods at 11-15...
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