biophiliac
Rest in Peace 1953-2021
I think it should go smoothly with 2 females. Maybe just put the new bird in a cage where they can see each other for a short period before introducing the new bird into Pals cage. Or you could leave the new bird in the small cage while it observes Pals behavior around the gallery, then when it is calm and settled you could let them meet while free in the galery. Pigeons are great observational learners - let her see Pal getting treats and attention ...What is the introduction process like?
Are you picking her up or having her shipped?
How are they sure she is a hen? has she laid eggs?