It will be interesting to learn if the hybrids are fertile or not
They seem to think so in this article https://www.wbur.org/hereandnow/2025/10/21/blue-jay-green-ja...
alt Hacker News
They seem to think so in this article https://www.wbur.org/hereandnow/2025/10/21/blue-jay-green-ja...