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.

In 2002, an online database was set up allowing birdwatchers to record their species observations. It is now a vast resource, shaping scientific research.

Despite billions of passerines seasonally migrating during the night at high altitudes, only three bat species have been found to consistently tap into this rich prey resource. However, it remains unk...