BirdNote Daily

Scientists have puzzled for centuries over how different groups of birds are related. Did birds that look physically alike, such as falcons and hawks, arise from a common ancestor, or did they reach those similarities independently? This line of inquiry was given an immense boost in recent years when an international research team unraveled the genetic codes of 48 species of birds. The results are emerging, including a revised evolutionary tree for birds that places falcons such as this American Kestrel — and parrots such as this Rainbow Lorikeet — on adjoining branches. Learn more at BirdNote.org.

The strange wading birds known as jacanas are nick-named "lily-trotters" for their ability to walk on lilypads. In Jamaica, they're known as "Jesus birds," because they appear to be walking on water — a feat made possible by their long toes. But that's not all that's cool about jacanas. The males, including the Comb-crested Jacana pictured here, can carry their young under their wings. Picture this colorful wading bird, crouching down and spreading his wings. The young scoot in under him, and he sweeps them up and carries them off, tiny legs dangling from under his wings. Learn more at BirdNote.org.

Fresh-fallen snow is beautiful, but it poses a challenge to birds. The ground where they found food is now covered by several inches of snow. Birds such as juncos and other sparrows flit under bushes where snow doesn’t cover the ground. Finches and chickadees pick at the seed heads of plants sticking out above the snow, while robins (like this American Robin) seek out dried fruits. Nuthatches and woodpeckers cling to trees as they search for insects within the bark. Learn more at BirdNote.org.

Sandgrouse live in some of the most parched environments on earth. To satisfy the thirst of their chicks, male sandgrouse carry water back to the nest in a surprising but effective way: by carrying it in their feathers. Thanks to coiled hairlike extensions on the feathers of the underparts, a sandgrouse such as this Burchell's Sandgrouse can soak up and transport about two tablespoons of liquid. The sandgrouse chicks use their bills like tiny squeegees, “milking” their father’s belly feathers for the water they need. Learn more at BirdNote.org.

Trumpeter Swans weigh over 25 pounds and measure about five feet from beak to tail. They were nearly hunted to extinction by the turn of the twentieth century. In Arkansas, a small flock of Trumpeter Swans began spending the winter at Magness Lake in the 1990s. It has now grown to one of the biggest winter swan flocks in the Southeast. In recognition of its value to the swans, Magness Lake has been designated an Important Bird Area. Learn more at BirdNote.org.

While many shorebirds have gone south, tiny sandpipers called Sanderlings are easy to find on winter shores. They follow the waves as they lap in and out, probing the swirling sand for prey. They often eat various small crustaceans such as mole crabs, isopods, and amphipods. But they also enjoy miniature clams, polychaete worms, and horseshoe crab eggs. They’ll even catch flying insects or eat plant matter. Learn more at BirdNote.org.

Ravens are seen as tricksters in many traditions. But Common Ravens have a softer side. During courtship, a pair will often sit side by side, sometimes preening each other's feathers. And during that ritual, one or both may make soft warbling sounds. Raven nestlings sometimes make this same sound after they've been fed. Compared to the usual raucous raven calls, this one is soothing. It's called a comfort sound. Learn more at BirdNote.org.

Gulls are often called "seagulls," but many spend a lot of time far away from the sea. The Franklin's Gull breeds in freshwater wetlands more than 5,000 miles from its winter home at the ocean. After the breeding season, they ascend high in the sky for their long flight across the Equator to the coasts of Peru and Chile. Now deserving the name "seagull," the Franklin's Gulls roost on the beach and dive for anchovies in the cold Humboldt Current. Habitats of the world are connected by the birds that go between them. Learn more at StateOfTheBirds.org.

Thanks in part to the political will and financial contributions of waterfowl hunters and such organizations as Ducks Unlimited, natural wetlands that might otherwise have been lost have been preserved. Take a field trip with your local Audubon chapter to see what you can see. Maybe you'll see one of these Blue-winged Teal. You can learn more about duck stamps and how they help protect habitat for migratory waterfowl at Ducks.org.

Hummingbirds are built for hovering flight, with flexible wrists that rotate their wings in a rapid figure-eight motion that generates almost constant lift. Eurasian Skylarks, on the other hand, hovers by fluttering its wings 10-12 times per second, singing all the while. Some raptors such as American Kestrels use a different strategy: by flying into the wind, they can float in place while they scan for prey. Learn more at BirdNote.org.