Mistle Thrushes have been turning up on our Rowan ‘Joseph Rock’, which I put in the garden years ago specifically because the autumn colour is so good, and the yellow berries are eaten later than the native Rowan’s red berries. They have just decided the berries are ripe for eating. They do something unusual, called ‘resource guarding’, as Sian researched recently. Some Mistle Thrushes will guard a tree, often Holly or Yew, to deter other birds from eating the berries, saving them for harder times in
midwinter. Resource-guarding Mistle Thrushes have been shown to breed earlier and have bigger broods than others. Conditions: Another in this spell of worryingly warm November days, with sunshine and a stiff breeze. Temperature: Max 17- Min 9c.