Inbreeding detrimental for survival Inbred birds don’t live as long and have fewer offspring than non-inbred birds. Inbreeding is equally harmful regardless of where the birds live. Published 30.07.20
Brawler at the bird feeder The common redpoll gets into brawls when it seems like it should really be watching out for enemies. How can that end well? Published 02.01.18
Bullfinches stick together for years Bullfinch fidelity to their mates can last for years. Published 28.12.17
