Peregrine Falcon Nest at Castle Rock, Minnesota — Live Webcam
Castle Rock Cliff: A Rock Above the Great River
On the eastern bank of the Mississippi, in the Bluff Siding area of Wisconsin, rises a massive sandstone formation known as Castle Rock. This cliff towers over the river opposite the city of Winona, Minnesota, and is a typical river bluff of the Upper Mississippi — a sheer wall of ancient sedimentary rock formed millions of years ago. It is here, high above the water, in a rock crevice, that peregrine falcons — the fastest birds on the planet — have made their nest.
Access to the cliff itself is restricted: it is located on private property, and getting close to it is virtually impossible. However, the online camera allows you to observe the life of these predators in a way no ornithologist could in the field — without interference, without fear of startling the birds, in the finest detail.
Peregrine Falcon: Speed and Hunting Perfection
The peregrine falcon (Falco peregrinus) is a bird of prey famous for its speed. During a hunting dive called a "stoop," the peregrine falcon can reach speeds exceeding 320 km/h, making it the fastest animal on Earth. The impact from such a dive instantly kills the prey — usually ducks, pigeons, or other medium-sized birds caught right in mid-air.
The peregrine falcon is easily recognizable by its appearance: dark gray back, white or cream belly with crosswise barring, an almost black head with distinctive "mustache" markings, and bright yellow legs and eye ring. The beak is hooked with a notch on the upper mandible — a special adaptation for severing the neck vertebrae of its prey.
Faber and Elsa: The Cliff Pair
The nest at Castle Rock is occupied by a pair of peregrine falcons — a male named Faber (Faber) and a female Elsa (Elsa). The birds nest in a sandy pothole — a natural depression in the rock that protects the clutch from rain and wind. The bottom of the pothole is lined with gravel and rock fragments — peregrine falcons do not build nests in the traditional sense but use ready-made depressions.
Peregrine falcons are known for their fidelity to nesting sites: if the territory is safe and the food supply is sufficient, the pair returns here year after year. At Castle Rock, the birds appear in late February or early March, after wintering, and immediately begin cleaning the pothole and courtship displays.
Breeding Season: From Egg-laying to Fledging
The female lays 3–4 eggs of a reddish-brown color with dark speckles. Incubation lasts about 33 days, and during this period you can observe the birds taking turns warming the clutch while the other partner hunts. The chicks hatch helpless, covered in white down, but within a month and a half they take flight and leave the nest.
In the wild, the survival rate of peregrine falcon chicks is approximately 50–60%: some fall prey to predators, others to severe weather. However, at Castle Rock, high above the river, the nest is reliably protected from ground predators, which increases the chances of successful breeding.
Winona and the Driftless Area: Land of Bluffs
The city of Winona with a population of about 25,948 (2020 census) is located on the western bank of the Mississippi and is known as the "Island City" — the historic center is surrounded by the river and marshy channels. Winona lies in a region geologists call the Driftless Area — a territory that was not covered by glaciers during the last ice age. As a result, high bluffs, deep valleys, and a unique ecosystem have been preserved here.
Winona's most famous landmark is Sugar Loaf — a freestanding rock about 150 meters high with a flat top, easily recognizable by its silhouette. But for peregrine falcons, Castle Rock on the opposite bank is far more important — an ideal vantage point for hunting over the river and coastal meadows.
What You Can See on the Camera
The online camera at Castle Rock provides a detailed view of the peregrine falcon nest located in a rock crevice. In the frame is a bird with dark gray upper feathers, a white belly with dark crosswise bars, a dark head, and a yellow beak, sitting on the nest. Under its talons, brown eggs with dark speckles are visible. The nest is arranged on a gravel bed inside a stone ledge with rough stone walls. The camera operates in real time, allowing you to observe the parents taking turns on the nest, feeding the chicks, and the first flights of the young birds.
