Dear Helene,
thank you for that comment!
Yes you are definitely right in what you say about these five species being so well…
Maybe I should also include some more basic data.
Therefore, I have sorted all present species according to the number of breeding pairs:
Here, you can find also those species that are the most endangered.
Also, I want to include the full batch of data that shows every single datapoint for every species on every census: Here, developments for individual species are better visible.
You are also right that some species are very frequent with a few keepers. That is especially true for quindecim. Nevertheless, the total of over 100 pairs is by about one fourth caused by other keepers. So if it were not for this one person, quindecim would still be among the well off.
And yes I am looking forwards to talking about this issue in Hamburg again!