Northern saw-whet owl (Aegolius acadicus) < Photo by WDFW Northern saw-whet owls are one of the smallest species of owl in North America.

Owls are a group of birds that belong to the order Strigiformes, constituting 200 extant bird of prey species. Most are solitary and nocturnal, with some exceptions (e.g. the Northern Hawk Owl ...

The Whooper Swan is a familiar winter visitor across much of Britain and Ireland, though is less commonly encountered in the more southern counties. A large swan, with a triangular yellow bill patch, ...

A bold character with a scolding 'pitchuu' call, the Marsh Tit has declined significantly and has been Red-listed in the UK since 2022. Widely distributed in England and Wales, the Marsh Tit favours ...

Visual representation of scalar and vector fields using Numpy's contour and quiver functions. Comparison of vector field computed using Numpy's gradient function with the same vector field plotted ...