Bird
🐦
🐦
Size
15 cmSimilar to a House Sparrow but chunkier
Weight
25–34 gAbout the weight of a large strawberry
Lifespan
3 years
Rarity
Common
M vs F
Males are bright olive-green with yellow wing flashes; females are duller, more streaked brown-green
Habitat
Woodland edges, hedgerows, parks, gardens — a regular feeder visitor
Best time
Year-round; most visible in winter at feeders
Conservation
UK: Red
LC
💡 Did you know?
Greenfinch populations collapsed by over 35% between 2005 and 2015 due to a disease called trichomonosis — a parasitic throat infection spread at garden bird feeders
Trichomonosis (caused by the protozoan Trichomonas gallinae) was historically a disease of doves and pigeons — it jumped to finches at garden feeders where birds congregate and share contaminated food and water
Often confused with
Siskin (smaller
heavily streaked
yellow-green)
Crossbill (crossed bill
no yellow wing flash)
Yellowhammer (yellow head
bunting)
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