So, the ECB has opened this survey to get an idea if people would like to see birds on the next set of Euro bank notes.

https://survey.ecb.europa.eu/euro-banknote-survey?lang=en

Okay. My phrasing might be a bit leading as there are other topics they present as options to thumb down before they ask about the birds (like European virtues and culture expressed as hands). But really, in the end... they just want your OK to put birds on bank notes.
If you have some time for this: lend them a hand!