This is a rather indirect report, so bear with me.
On Monday the Interfax news agency reported that in a forum in Kiew,
Walerij Saluschny , head of the Ukrainian army said that Ukrainian children deserved special attention because almost 9 000 of their fathers had died.as heroes. This was further reported in the German magazine focus.de
https://www.focus.de/politik/ausland..._52139887.html
If true this is an astonishing difference to their reported number of 40 000 Russians killed so far, but both numbers remain somewhat mysterious.