"The Mobile-Tensaw Delta — a lush, vibrant and surprisingly intact over 400-square-mile (1,036-square-kilometer) expanse of cypress swamps, oxbow lakes, marshland, hardwood stands and rivers — is teeming with more aquatic species than almost anywhere in North America."

"The world is currently seeing the fastest-spreading, largest-ever outbreak of H5N1, a highly contagious, deadly strain of avian influenza. Scientists say this virus now presents an existential threat to the world’s biodiversity, with the risk to humans rising as it continues to leap the species barrier, reaching new host species."

"Perched on a nest atop a green navigation marker in Maryland’s Harris Creek, the osprey glared, spread its wings and started hopping as a boatload of people drew near."

"Less than half of stunned or injured birds survive a collision with a window, research has found, pushing up estimates that more than 1 billion birds may die each year from flying into buildings in the US."

"Under a chrome-colored sky ribboned by rainclouds, local outfitter Jake Hutton led a horseback tour of the Kelly Parcel, telling stories all the while."

"Sea lions are stranding themselves on a long stretch of the California coast and showing signs that they may have been poisoned by a bloom of harmful algae, experts said Thursday."

"Researchers are restoring the Caribbean’s surprising, spiky custodians, which gobble up the algae smothering coral reefs."

"Scientists studying migrations, endangered species, and global change are placing tracking devices on thousands of animals that will be monitored by a satellite-based system set to launch next year. If successful, the project could help illuminate the planet’s nonhuman worlds."