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Rockford Scanner » Rockford Scanner : A pair of peregrine falcons have successfully hatched three eyases in downtown Rockford

Rockford Scanner : A pair of peregrine falcons have successfully hatched three eyases in downtown Rockford

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A pair of peregrine falcons have successfully
3 eyases in downtown Rockford



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Sinnissippi Audubon Society

Sinnissippi Audubon Society

ICYMI: A pair of peregrine falcons have successfully hatched three eyases in downtown Rockford for the 6th year!
The adult female, Louise, has selected the same nest location, 99 E. State Street, since 2018. The adult male, Brian, has been the resident male for the past 3 years. Each year the pair has been together, Louise has laid five eggs but an entire clutch of five has not successfully hatched to date. Five eggs provide a chance for a better overall survival rate though.

This location was formerly the @rockfordregisterstar news tower, it is now known as the Iconic Building and owned by @iconicenergy. Both building owners have allowed Sinnissippi Audubon to keep our camera streaming on the 8th floor for the community to watch. We are so grateful to them for giving us this opportunity!

Next week, May 30th at 10am, the three young falcons will be banded. Why are they being banded? As with any bird, scientists want to know “Where do they go?” The simplest way to find out is to place color and number-coded bands, like bracelets, on the birds’ legs. The codes are recorded in a national database that includes weight, sex and banding location. When the banded bird is found months or years later, scientists consult the database to learn about the bird.

Watch the nest cam:


Sinnissippi Audubon Society

About Peregrine Falcons
The peregrine falcon, also known as the peregrine, and historically as the duck hawk in North America, is a widespread bird of prey in the family Falconidae. A large, crow-sized falcon, it has a blue-grey back, barred white underparts, and a black head. As is typical of bird-eating raptors, with females being considerably larger than males. The peregrine is renowned for its speed, reaching over 200 mph during its characteristic hunting stoop (high speed dive), making it the fastest member of the animal kingdom.

The bird of prey’s population was wiped out in Illinois by the 1950s and 1960s, due in part to the widespread use of pesticides like DDT. These chemicals caused egg shells to thin, resulting in breakage, as well as abnormal reproductive behavior in adult birds. Throughout North America at that time, peregrine falcons were close to extinction.

The birds were placed on the federal and Illinois endangered species lists in 1973, according to the Chicago Peregrine Program. The program launched in 1985, and released 46 birds into the wild between 1986 and 1990, according to The Field Museum. By 1988, there was believed to be only one breeding pair, in Chicago. Currently, there are at least 30 breeding pairs.

It was in 2015 that peregrine falcons were removed from Illinois’ List of Endangered and Threatened Species. The peregrine population now is a threatened species under the Migratory Bird Treaty Act.

The peregrine falcon was proclaimed the official city bird of Rockford, Illinois on July 17, 2020 by Mayor Thomas McNamara. A local young birder and RPS 205 student, Jackie Kuroda, launched a campaign last year to have the peregrine falcon named the official city bird.

Sinnissippi Audubon Society

Source: Sinnissippi Audubon Society

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