R-E-S-P-E-C-T the Beak!
R-E-S-P-E-C-T that is what your parrot needs
Aretha Franklin famously sang the song Respect where that word was spelled out as above. The song was about demanding that a man respect her if he wanted her love. But the same word applies to our parrots just as much if we want to develop good, healthy, loving relationships with them.
These magnificent animals are not like domesticated dogs and, in some cases even cats, whereupon first meeting, positive interaction is likely.