Q: We moved to a property where there are many shallow, large roots spreading out from a mature tree in the lawn, and the roots have holes in a few places. Should we fill them in to prevent rot? A: ...

Watch along as Dr. Clay Corbin of Bloomsburg University bands some tree swallow chicks, it's all part of the Tree Swallow Project.

The tree swallow is the only swallow that is truly swallow tailed, meaning the tail is deeply split and has white spots. The adult is blue-black above; cinnamon-buff below, with a darker throat. Most ...

There are eight species of swallows in North America with seven species in Montana. The cave swallow is mostly found in Texas and Mexico. Tree, violet-green, northern rough-winged, bank, barn, and ...

WASHINGTON — Much like it’s easy for you to slip on a wet floor — tree roots can slip out of the ground when there’s wet soil. And, some species are more susceptible than others. Trees with shallow ...

Question for Dan Gill: Could you explain why too much fill can kill a tree? --Carol Cohen Answer: Tree roots breathe in oxygen and breathe out carbon dioxide. They obtain the oxygen they need from the ...

Tree swallow nests across Pennsylvania are being collected for an investigation into the patterns that the common, fast-flying, cavity-nesting birds might incorporate into their nest construction.