alt Hacker News> the range of blue jays, a temperate bird living all across the Eastern U.S., only extended about as far west as Houston. They
I get why the green jay’s habitat would have expanded northward (from more tropical areas) in a warming climate, but I don’t get why the blue jay’s habitat would have expanded west of Houston.
Like many places, central Texas is warmer than it used to be, and maybe drier, but I wouldn’t think you could call it more “temperate” now.
Human changes to ecosystems have altered the range of many bird species. Not just climate -- farming, ranching, housing, and recreational land uses tend to dramatically cause changes to bird ranges.