A pinch of methylmercury is just ducky for mallard reproduction, according to a new federal study. The findings are counterintuitive, since methylmercury is ordinarily a potent neurotoxic pollutant.

Calling someone an old coot may be a compliment to their ingenuity. American coots possess cognitive skill enabling them to discern their own chicks from impostors. The wetland birds use hatching ...

That’s a frog embryo, leaving its egg to enter the world, and this embryo can hatch at will. The red-eyed tree frog lays its eggs on a branch or leaf above the water. Once they’re in the last third of ...

March 23 — To the Editor: In spring or fall of the school year, many teachers will place fertilized eggs in incubators in their classrooms which will hatch within 3-4 weeks, ostensibly to teach ...