Synagris wasps (Hymenoptera: Vespidae: Eumeninae) include some of the most spectacular examples of exaggerated secondary sexual "weapons" known. I examined the scaling relationship between tusk length ...

The study of bird nesting behavior and ecology encompasses the multifaceted strategies and architectural innovations birds employ to ensure the reproductive success and survival of their offspring.

Pennsylvania has its own avian whad ya know of sorts. New evidence suggests the sandhill crane, a long-legged bird mostly of boreal forests or southern United States wetlands, is breeding in ...