Although I do not like to make photos to nests of birds, in this case I think that is good to see the reforms made in a nest of
Great spotted woopecker by our protagonists.
The photos I have made by means digiscoping techniques, reason why the observed distance has been the sufficiently good like so that the birds were not bothered.
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As we can see this is a hole of a nest
Great Spotted Woopecker (Dendropocos major).
Here we can see since the reform has been made, reducing with mud the inlet diameter of the hole, until obtaining the suitable one.
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Here we have the authors of this peculiar adaptation, the
Nuthatch (Sitta europaea).
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