A Willow Warbler that thinks it is a blue-tit. (1 Viewer)

[John goshawk]

Hi All,

Have been watching some interesting behaviour in my garden and the surrounding gardens.
A Willow Warbler is always in company of a large flock of blue-tits and long tailed tits.
However if any other bird joins the party, the Willow Warbler is very aggressive at driving the bird away. This includes great tits/coal tits or finches.
Anyone shed some light on this.
Thanks John

 

[Richard Prior]

This cropped up a few weeks back: Agressive Willow Warbler

 

[John goshawk]

Thanks for that.