Finland's 2024 nesting bird report reveals a major increase in Red-flanked Bluetail, with breeding pairs rising from 1,500 in 2013-18 to an esimated 13,000 in 2019-24. While the species remains Vulnerable due to its concentration in eastern and north-eastern Finland, habitat expansion, potentially driven by warming climate, and earlier spring warmth are likely assisting its spread. Other taiga birds show mixed fortunes, reinforcing the need for continued monitoring.