Scientific name: Phylloscopus sibilatrix
Look for the wood warbler singing from the canopy of oak woodlands in the north and west of the UK. Green above, it has a distinctive, bright yellow chest and eyestripe.
Average lifespan: up to 5 years
Classified in the UK as Red under the Birds of Conservation Concern 4: the Red List for Birds (2015). Priority Species under the UK Post-2010 Biodiversity Framework.