For that purpose she had a big wire cage constructed around an old apple tree, filled it with birds imported from the U.S. There Artist Doughty spends months studying her birds, sketching poses ...

The math concept hidden in this tree art — geometric shapes known as fractals — is apparent in branching patterns in nature and may be key to humans’ ability to recognize such artwork as ...

In recent experiments at Cardiff University in Britain, a pigeon identified subtle differences between abstract designs that even art ... The birds roost together at night on a tree, arriving ...