Just curious is Two Male Cockatiels fighting with a Female nearby Male behaviour? If it is I posted a thread after Casper and Rocko had a fight while Rocko was trying to get closer to Casha a Female.Here is the thread ./viewtopic.php?f=23&t=2564

And also what about Females do they fight over stuff like that because Loki doesn't get along with other Females well Casha anyway She liked Casper though lol.

Lucy has little squabbles with Alex when they're too close. She apparently likes her personal space Though Alex could be male or female, for all I know.

So I guess they do fight, though not sure if it's for the same reasons.

I would say thats just pecking and not actually fighting like Loki and Rocko peck each other if they go to close.