Chicks chasing each other

[Maggieisabelle]

My chicks are a little over 2 weeks old and my cuckoo Maran is chasing my poor Ameraucana around the brooder. Is the Cuckoo trying to establish dominance? Is it a game? I feel bad for the Ameraucana because there is A LOT of screaches coming from her. My Ameraucana is the sweetest thing and it’s sad to see her getting chased around

 

[Wyorp Rock]

Do you have a video of it?
How much brooder space do you have?

Chasing can be play, dominance/pecking order and on occasion just downright bullying. As long as the chicks have room, the Amercauna is not being pinned down/plucked or injured and she is not being kept from food/water, then I would just monitor it. Let things work itself out.