Peregrine Falcon Nest in Dubuque — Live Webcam Online
History of Peregrine Falcons at the Dubuque Courthouse
Dubuque, the oldest city in Iowa, located on the banks of the Mississippi River, has become home to a remarkable pair of raptors. In 2017, peregrine falcons first chose the Dubuque County Courthouse as their nesting site — since then, the pair has returned here annually, laying eggs and raising chicks in the same location. This event became a landmark for local ornithologists and wildlife enthusiasts, as peregrine falcons are among the rarest and most protected raptors in the region.
The courthouse building, known as the Sint-Martensdor, provided ideal nesting conditions: high elevation, no direct obstacles for takeoff and landing, and an abundance of prey in the form of pigeons and small birds in the city center. The installation of a special nest box on the building's roof became part of the peregrine falcon population recovery program in Iowa, which has been running for several decades.
Nest Structure and Camera Features
The peregrine falcon nest box at the Dubuque Courthouse is a wooden structure installed on the building's roof. The construction is made of wooden planks and logs, with a side platform-approach that makes it easier for the birds to access the nest. Inside, the nesting area is filled with feathers, twigs, and other natural materials that the peregrine falcons use for raising their chicks.
The Dubuque falcon nest camera is equipped with an infrared function for nighttime viewing. Infrared night vision allows observing the birds in the dark, as the birds cannot see or feel infrared light — this means the broadcast runs around the clock without any interference in the natural behavior of the peregrine falcons. The image in night mode is black and white, but clear enough to distinguish all the details of nest life.
A peregrine falcon nest box is best placed in an area where a nesting pair already exists — this is exactly what happened in Dubuque. Experience shows that peregrine falcons are conservative in choosing their nesting site and return to successful locations year after year.
Life Cycle: From Eggs to Chicks
The female peregrine falcon begins incubating the eggs after laying the second-to-last egg, and incubation lasts an average of 34 days. During this period, the female rarely moves and almost never leaves the nest — the male feeds her, bringing prey and caring for his mate. This division of duties is typical for peregrine falcons and allows the eggs to maintain a constant temperature necessary for embryo development.
After hatching, peregrine falcon chicks are helpless and covered with sparse down. In the first weeks of life, the female stays in the nest, warming and feeding the offspring, while the male continues to hunt. Gradually, the chicks grow stronger, become covered with feathers, and begin to show activity — this period is especially interesting for observing through the Dubuque peregrine falcon nest webcam.
Infrared Mode: Nighttime Bird Observation
One of the unique features of the Dubuque peregrine falcon nest camera is the ability to observe in the dark. The infrared mode turns on automatically when light levels drop, and the image switches to black and white format. This allows seeing what happens in the nest around the clock without disturbing the birds with artificial light.
Nighttime observation is especially valuable during incubation, when the peregrine falcons rest in the nest, and during chick feeding, when the female may bring prey even in the dark. The Dubuque peregrine falcon infrared camera online provides an opportunity to see the birds' behavior in natural conditions, without any interference in their lives.
Seasonality and Best Time to Watch
The Dubuque Iowa peregrine falcon camera operates year-round, but the most interesting period for observation is spring and early summer, when the pair is actively nesting. During this time, you can see courtship ceremonies, egg laying, hatching of chicks, and their first attempts to take flight. In autumn and winter, the nest is usually empty, but peregrine falcons may appear on the courthouse building while hunting or resting.
The Dubuque Courthouse webcam is available for viewing at any time, and even during the non-nesting season, you can observe other birds that visit the building's roof, or enjoy the view of the city and the Mississippi River.
Interesting Facts About Peregrine Falcons
The peregrine falcon is the fastest bird in the world, capable of reaching speeds up to 390 km/h in a diving flight. These predators hunt other birds by rising to great heights and diving at their prey with incredible speed. In Dubuque, peregrine falcons primarily hunt pigeons and starlings, which are abundant in the city center.
In 2025, a new female peregrine falcon with a silver federal band (1947-31235) on her right leg was spotted on the camera, forming a pair with a male named "Mango." Banding is a standard procedure for tracking the migrations and behavior of peregrine falcons, and each banded falcon has a unique identification number.
Peregrine falcons were on the verge of extinction in the United States in the mid-20th century due to the use of the pesticide DDT, which caused eggshell thinning. Population recovery programs, including the installation of nest boxes on buildings, have helped return these birds to many cities across the country, including Dubuque.
What You Can See on the Camera
The Dubuque peregrine falcon nest camera shows the wooden nest from inside, located on the courthouse roof. During the day, the image is in color with good detail — you can make out feathers, twigs, and other materials that the peregrine falcons use to line the nest. During the nesting period, the birds themselves appear in the frame: the female sitting on eggs or feeding chicks, and the male bringing prey.
At night, the camera switches to infrared mode, and the image becomes black and white. In the dark, you can observe how the peregrine falcons rest in the nest, how the female turns the eggs, or how the chicks move under her feathers. The Dubuque peregrine falcon camera online operates in real time, allowing you to see the life of these amazing birds without any cuts.
