Sandy Geffner (center, with binoculars) gathers the troops at Greiner Hall for a nature walk on the North Campus. The walk was sponsored by the Professional Staff Senate's Sustainable Living Committee.

Sandy Geffner pointed out that the leaves of a white oak tree are rounded…

…while the leaves of a red oak tree have sharp-looking, bristled edges.

Sandy Geffner points out a squirrel to the UB nature-lovers. Squirrels, Geffner says, slobber on acorns that they then bury in the ground. They can find those acorns by tracking the smell.

Sandy Geffner holds up a seed pod from a poplar tree.

Wood sorrel is an edible plant that grows throughout North America.

Sandy Geffner calms a garter snake he found in the woods.

Garter snakes are often found in Letchworth Woods.

The large leaves of the tulip tree offer more leaf surface for photosynthesis, Sandy Geffner told those on the nature walk.

The mighty oak is the king of the forest because it can grow for years in the shade while other trees struggle to reach the top of the canopy.

The Northeast is home to numerous varieties of native ferns.

A bird used a variety of items to fashion its nest.

A red-tailed hawk soars overhead.