Freddie singing in head voice in these songs...?

Hi folks!  This one for experts:

Just wondering that did Freddie use head voice in singing very high melodies for example in The Hero, The Hitman, Put Out The Fire (choruses) and Another One Bites the Dust (the highest notes).

When they covered Immigrant Song live Freddie used something different sounding technique to produce those high notes. Similiar way like Robert Plant did. Is this the same vocal register technique (or whatever you call it) Freddie used in those aforementioned songs?

In the songs you've mentioned Freddie was singing the highest notes with his head voice ,which is  really high and difficult.
And when they performed this little fragment of Immigrant Song Freddie was actually singing those high notes with falsetto...

Ok, thank you!

No worries!