An example of the bare ground surfaces where emergence holes were observed on a study site in Corvallis, OR. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases ...

Visually observing yellow jackets entering and exiting the hole is the best way to know if it’s an entry point to a yellow ...

If a pile has a pencil-size hole at the top, it’s likely a bee nest, specifically of the ground bee variety. It’s also possible to spot ground bees around the yard, since they tend to linger ...