Under these drastically changing conditions, the struggle to survive favored the larger birds with deep, strong beaks for opening the hard seeds. Smaller finches with less-powerful beaks perished.
sat a Crow and in the Crow’s beak was the biggest piece of cheese he’d ever seen. Now the Fox loved cheese more than anything in the whole world and he decided that come what may he would have ...
The British love of feeding birds may have caused great tits to evolve longer beaks than their counterparts in Europe, according to an academic study. The study compared the DNA of more than 3,000 ...