The Secrets Behind the Swallow‑Tailed Kite's Perfect Flight | BBC Earth
15 Video Views·Feb 12, 2026
Swallowtail hawks dominate the skies thanks to their long wingspan, slender bodies, and deeply forked tails that allow for agile directional changes. They utilize warm air currents to soar high, conserving energy and observing prey with keen eyesight.
Swallow-tailed kites have been here since March.
Two-thirds of the North American population come to Florida each year to breed.
Courting, feeding, drinking and even bathing on the wing.
The feet of these extraordinary birds almost never touch the ground.
They're about to make an 8,000 kilometer journey
to their winter feeding grounds in South America.
And the birds gather en masse to prepare.
As they store up energy for the flight, it's vital they aren't disturbed.
So they gather in remote roosts, far from people.
After a morning bath, the kites preen their feathers
to keep them in condition for the long journey to come.
They appear to sense atmospheric changes as hurricanes begin to approach.
But far from avoiding these storms,
researchers suggest the birds capitalize on their headwinds.
And when the time is right, they take flight.
Hundreds, even thousands, soar above roosts at this time of year.
Their journey south can take up to four months.
And there's time for one last feed.
Now the birds head straight to a landscape created by us.
Agricultural pasture is alive with insects.
And this is where their forked tail comes in.
They use it like a rudder.
They discard the wings and fuel up on the protein-rich bodies of their prey.
Once they've had their fill, it's finally time to leave.