Long ago, the vulture was believed to signal impending doom. In modern-day Tarrant and Johnson counties, it’s the cattle egret we dread. Over the past 60 years, the eastern half of Texas has become a ...

Cows rest in the shade in a pasture on Home Place Road, accompanied by cattle egrets, a species of egret that like to eat the bugs stirred up by cattle grazing. These cows were resting and the birds ...

Charles Darwin described competitive interactions as one factor of natural selection and evolution, and present-day biologists usually emphasize this tenant whenever explaining basic, evolutionary ...