Meaning of the word "every cock crows on his own dunghill" in English

What does "every cock crows on his own dunghill" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

every cock crows on his own dunghill

US /ˈev.ri kɑːk kroʊz ɑːn hɪz oʊn ˈdʌŋ.hɪl/
UK /ˈev.ri kɒk krəʊz ɒn hɪz əʊn ˈdʌŋ.hɪl/
"every cock crows on his own dunghill" picture

Idiom

everyone is confident or influential in their own territory or home

Example:
He acts like a boss at home, but he's quiet at work; every cock crows on his own dunghill.
Don't be surprised by his arrogance in his home town; every cock crows on his own dunghill.