BirdNote Daily

The "Violaceous" Trogon (recently split into three species), which nests in Mexico, Central America, and northern South America, often excavates its dwelling within a large, active wasp or termite nest. It begins by devouring some of the insects, then digs a cavity large enough to accommodate the birds and their eggs. While they may continue to snack on resident wasps or termites throughout nesting, the trogons never eliminate all the insects, creating a nest that few predators would dare disturb. Learn more at BirdNote.org.

In this BirdNoir mystery, the private eye fields a call from a woman who says a large bird that looks like a Bald Eagle stole a Rainbow Trout from her pond. Through a process of elimination, the detective is able to rule out a few likely suspects and arrive at the probable answer. When you think you’ve spotted an eagle, remember to examine all the evidence. Learn more at BirdNote.org.

Most swallow species that nest in North America eat almost nothing except flying insects. When the bugs die off in the fall, the swallows head south to winter in the tropical zones of Central and South America and the Caribbean. However, Tree Swallows can also eat small fruits. If Tree Swallows arrive in the north before the insects are out, they’ll supplement their diets with fruit, giving them a competitive advantage for limited nesting sites. Learn more at BirdNote.org.

Snow Geese nest from far northeastern Russia to Greenland, in the arctic and subarctic. They winter in large flocks on the deltas of rivers in northwestern Washington, areas along the Eastern Seaboard, and throughout the Mississippi Flyway. Watching Snow Geese in flight, Barry Lopez described them, "as if the earth had opened and poured them forth, like a wind, a blizzard, which unfurled across the horizon above the dark soil ... great swirling currents of birds in a rattling of wings..." Learn more at BirdNote.org.

Explore how bird songs increase in complexity from the guttural hiss of a Turkey Vulture, to the short songs of Henslow’s Sparrows, and to the elaborate song repertoire of the Brown Thrasher.

This show was produced by World According to Sound. BirdNote and World According to Sound are teaming up for an immersive, 70-minute, virtual event about the sounds of birds. Learn more at BirdNote.org.

In the savanna country of northern Australia, the vegetation is well adapted to the area’s recurrent fires. As flames sweep across the savanna, Black Kites watch for prey like grasshoppers and lizards that flee the fire. But there’s now evidence that Black Kites may actually create fires by carrying burning twigs in their talons and dropping them on a patch of savanna away from the original wildfire. The kites then pick off the escaping prey. Setting a new area ablaze allows that individual kite to feed in a space where there aren’t so many rival predators.  Learn more at BirdNote.org.

Some plants have evolved fruits with edible flesh that attract birds. When birds swallow the fruit, they also ingest the seeds. They transport the seeds to new spots for the plants to take root. Birds’ digestive systems grind away the hard outer coating of the seed, making it more likely to germinate. Seeds in a bird’s droppings are pre-packaged in nutrient-rich fertilizer. Learn more at BirdNote.org.

Rachel Carson, author of Silent Spring, and her beloved friend Dorothy Freeman shared a love of nature… and especially of one particular bird: the Veery, a type of thrush. Plain looking as it is, the Veery has a particularly beautiful song. Learn more at BirdNote.org.

Resident Cooper’s Hawks that nest in the urban areas of Albuquerque, New Mexico, are thriving as the populations of doves, their prey, have exploded. The easy prey gives the urban birds a competitive advantage over hawks in more natural habitats, where prey is less concentrated. The soaring numbers of urban Cooper's Hawks could help preserve the genetic diversity of the species far into the future. Learn more at BirdNote.org.

How long can a bird fly without touching the earth? To find out, Swiss scientists attached sensors to Alpine Swifts. The sensors showed long periods when the swifts were gliding and not flapping their wings. Were the birds asleep? Scientists don’t know for sure. It could be that Alpine Swifts sleep during the summer breeding season — and don’t sleep at all during migration. But why do they stay aloft so long? Swifts can’t perch because they have very short legs. So if they can manage it, avoiding touching down makes perfect sense. Learn more at BirdNote.org.