How do these wooden biplanes appear on radar?

What is the evidence that they are being used as drones and not in a transport role?

Here is a good article which describes how the tactic was used in the 6 week war between Azerbaijan and Armenia.

https://thebulletin.org/2021/02/the-next-frontier-in-drone-w...

The drone theory is possible, but speculative. They could be used for transport or paratroops.

https://www.thedrive.com/the-war-zone/44532/russia-appears-t...

>Those aircraft could potentially be used together with the An-2s as part of a wider assault on Ukraine’s ground-based air defense network which has remained relatively intact against great odds.

>That, however, is not confirmed and we don’t know for sure that Russia plans to use the An-2s in this way.

Interesting to think about either way.