Where does “пташа” come from?

пташа (Ukrainian) comes from Ukrainian пта́х, from Proto-Slavic pъtakъ, from Proto-Slavic pъta, from Proto-Indo-European peth₂- — to spread out; to fly.

пташа (Ukrainian): birdling, birdie

Definitions

birdling, birdie

Ancestry of “пташа”, step by step

Step	Language	Word	Meaning
1	Ukrainian	пта́х	bird
2	Proto-Slavic	pъtakъ	bird
3	Proto-Slavic	pъta	bird
4	Proto-Indo-European	peth₂-	to spread out; to fly

Every word from Proto-Indo-European peth₂- →Every word from Proto-Slavic pъta →Every word from Proto-Slavic pъtakъ →