This site is not for solicitation of services or 'purchasing' development. Please do not post requesting side mods/plugins and so on. Your thread will be removed, and you will receive a warning.
I'm pretty sure that Braviary can spawn also in Mesa biomes. I didn't had time to confirm that but I'm pretty sure I remember Braviarys flying around when I was exploring the Mesa biomes in my server. Sorry if I'm wrong again! ^^