They really did their homework for Paldea dex, for example for the last 30 years the south of Spain had a problem with parrots from other lands arriving, reproducing and taking the ecological niche of theor native birds, this environmental issue has only gotten worse over the years and is reflected in Paldea's regional bird, Wattrel (based on hydrobatidae whose distribution area surround the iberan peninsula) not being found in the first areas of the game which take place in the south. They got displaced by fucking Squawkabilly