Your instinct is probably correct.

The lead hen isn't always the bossiest. My bossy girls are all middle order girls. My Frizzle is one & she's a super klutz & too heavy for any of the escape antics so she tends to take out her frustrations on my smaller girls who can & do escape regularly!

Suyin is plain mean to everybody because she would like to be an only child!

Morrigu was a lead hen in another life but can't dominate my big girls so rounds up the Littlies. And yet Lavender will tuck my bantams under her like chicks in cold weather & all my girls have been hanging round the little coop to keep Suyin company when they are let out so despite everything they look out for each other.