European Robin - adult vs juvenile - song/call, visuals, behaviour, slow mo - Rotkehlchen

Hey guys, here is a video of an adult and of a juvenile European Robin (Erithacus rubecula, Rotkehlchen). You can strongly here the difference in song/calls and in looks.
Wait for the slow motion at the last part of the video for wing beats and behaviour.
Enjoy!
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Shot on:
Nikon Z6
Nikkor 180-600 f/6.3 with Nikon Z 1.4x Teleconverter
Tascam DR60D II + Sennheiser MKE 600