Peregrine Falcon


2016 Peregrine Falcons at BWL

Lansing, Michigan

Eckert Power Station

2015 Peregrine Falcons at BWL

Lansing, Michigan

Eckert Power Station


*EGG 1* 4/1/15 1:47pm
*EGG 2* 4/3/15 4:17pm
*EGG 3* 4/5/15 6:52pm
*EGG 4* 4/7/15 early AM


*EGG 1* 5/9/15 6:41am
*EGG 2* 5/9/15 6:41am
*EGG 3* 5/11/15 6am Hour


June 8 at 10am

2014 Peregrine Falcons at BWL

Lansing, Michigan

Eckert Power Station


For the second year in a row, the Peregrine Falcon eggs atop the Eckert Power Plant were determined to be infertile. The Michigan DNR approved the eggs to be removed and candled on June 2, where they were determined to be infertile by Potter Park Zoo. Both adults have protected the nest hoping for a re-clutch, however, no eggs have been found.

The eggs were taken to the MDNR lab, near MSU’s campus, where pathologists were able to open them to observe and provide answers of why they are not viable.

GENERAL: The contents of the egg were a yellow-tinged liquid and a small yolk, but there is no evidence that the egg is fertile.

DIAGNOSIS: Egg, Infertile

Photo 6/2/14 6:46a Viper (F) on the left, Eckert (M) on the right

A meal brought in to feed the family

6/2/14 - Candling one of the three eggs, infertile

7/2/14 – Our pair still are protecting their nest and territory daily;

Viper (F) on the left, Eckert (M) bowing to her on the right.


On Thursday, May 15, BWL’s “resident Peregrine Falcon” expert spoke to WKAR Current State radio about this year’s nest. Dina Maneval talks about Eckert and Viper’s three eggs and the hopeful wait for them to hatch.

» Listen to the entire interview

The adult male Peregrine is the same falcon as 2013. He’s 5-years-old and has been nicknamed “Eckert.” His bands are Black/Green *P/*H. The * shows the letters on his band are tilted.

Eckert on April 17:


The female this year is new from Windsor, Ontario, Canada. Her name is Viper and she’s 2-years-old. Her color band is Black/Black 22/W.

Viper on April 11:


This photo from April 9 shows Viper and Eckert getting to know each other by courting. The male is bowing to her.

In 2004, BWL successfully fledged 3 Peregrine Falcon chicks from our Eckert Power Station.


In 2008, BWL successfully fledged 5 Peregrine Falcon chicks from the same location, Eckert Power Station.

In 2009, BWL successfully fledged 2 Peregrine Falcon chicks from the same location, Eckert Power Station.

In 2010, BWL successfully fledged 2 Peregrine Falcon chicks from the same location, Eckert Power Station.

In 2011, BWL successfully fledged 3 Peregrine Falcon chicks from the same location, Eckert Power Station.

In 2012, BWL successfully fledged 3 Peregrine Falcon chicks from the same location, Eckert Power Station.

In 2013, our Peregrine produced two clutches of eggs. WC was our adult female and she laid 4 eggs in April in her first clutch, and 3 eggs in June in her 2nd clutch, none of them were fertile.

Our two Falcon WebCams will update a new image every 15 minutes. Please come back to visit our site often and check for new images!

Active incubation is 30 to 35 days and will start when the 2nd egg is laid.

The MDNR will band the chicks when they mature to about 3 weeks old.

The nestling will begin to fledge when they reach approx 40-45 days old.

March = Courtship
April = Lay Eggs
May = Eggs Hatch
June = Banding
July = Fledge


Nest camera External camera

Video Gallery

Stelco preparing her scrape. Jumping into the nest.
Courtship of the Peregrine falcon. A pigeon lunch at the nesting box.

Pennies for Peregrine

Lansing, Michigan is one of many successful Peregrine Falcon nests in our state. Lansing Board of Water and Light (BWL) is very fortunate and honored to have an endangered species of Michigan take habitat at our Eckert electric generating plant. Our new falcon cameras were installed on February 28, 2008.

In 2004, after we successfully fledged 2 of our 3 falcon chicks, our thoughts shifted to how to help them in years to come. Since the peregrine will use the same nesting site year after year, and they mate for life, there would be a good chance they would return to nest at BWL Eckert for many years to come. In the spring of 2006, Stelco, the female falcon, laid 5 eggs on the breaching near the roof of our 5th generating unit. However, those eggs did not hatch. While incubation was in progress and wishing we had a nesting box for her to use, we starting making plans to build a nesting box. On March 12, 2007 we placed our nesting box on the east most breaching of our 6th generating unit at Eckert. Ten days later on March 22nd, Stelco jumped into her new home happily. The summer of 2007 was again successful, Stelco laid 5 more eggs. But again, they did not hatch. In 2008, we raised the nesting box higher above the very hot breaching in hopes of helping the falcons have a successful brood. We also added hinges to the back for access into the box when the time comes to band the eyases in the summer of 2008.

On Thursday, September 13, 2007 Lansing Board of Water and Light kicked off an event called PENNIES FOR PEREGRINE at Moores Park Elementary school. The children and staff helped BWL efforts to collect pennies, and other coins of any size, to add to the donation collection for purchase of a webcam. The camera would then be placed outside looking into the nesting box at the Eckert Power plant in Lansing, MI.

In addition to the kids' donations at Moores Park, BWL employees also donated their pennies, as did several other local donors of the Lansing and surrounding areas of Lansing. On Thursday February 28, 2008 our cameras arrived at Eckert and were ready to install. The day was rather cold but they were mounted in no time at all.

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Shown are (L to R): Principal Mara Lud at Moores Park Elementary, Superintendent of Lansing School District, T.C. Wallace, BWL General Manager J. Peter Lark.
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Jenny Scullon with MUCC gives the students an up close look at a live peregrine falcon.
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Students at Moores Park Elementary enjoying our hot dog cookout that followed the presentation of the falcon program.
click for larger image
Installation by Chris Conn and Al Conn

The Peregrine Falcon (Falco peregrinus), also known simply as the Peregrine, and historically also as "Duck Hawk" in North America, is a cosmopolitan bird of prey in the family Falconidae. It is a large falcon, about the size of a large crow, with the female being larger than the male, and with a blue-gray back, barred white underside, and a black head and "mustache". About seventeen subspecies are recognized, which vary in appearance and range. The breeding range includes land regions from the Arctic tundra to the Tropics. Essentially, this species can be found everywhere on Earth, except in the polar regions, on very high mountains, in deserts, and most tropical rainforests making it the world's most widespread falcon, and in fact the most widespread bird of prey. The only major ice-free landmass from where it is entirely absent is New Zealand. Both the English and scientific names of this species mean "wandering falcon" and refer to the migratory habits of some populations of this widespread species.

It feeds almost exclusively on medium-sized birds, but will occasionally hunt small mammals. It reaches sexual maturity at one year, and mates for life. It nests in a scrape, normally on cliff edges or, in recent times on tall man-made structures. The Peregrine Falcon became an endangered species due to the use of pesticides, especially DDT. Since the ban on DDT from the beginning of the 1970s onwards, the populations recovered, supported by large scale protection of nesting places and releases to the wild.


The Peregrine Falcon has a body length of 34–50 cm (13–20 in) and a wingspan of around 80–120 cm (31–47 in). The male and female have similar markings and plumage, but as in many birds of prey the Peregrine Falcon displays marked sexual dimorphism in size, with the female measuring up to 30 percent larger than the male. Males weigh 440–750 g, and the noticeably larger females weigh 910–1500 g; for variation in weight between subspecies, see under that section below.

The back and the long, pointed wings of the adult are usually bluish black to slate grey with indistinct darker barring (see "Subspecies" below); the wingtips are black. The underparts are white to rusty and barred with thin clean bands of dark brown or black. The tail, colored like the back but with thin clean bars, is long, narrow and rounded at the end with a black tip and a white band at the very end. The top of the head and a "mustache" along the cheeks are black, contrasting sharply with the pale sides of the neck and white throat. The cere is yellow, as are the feet, and the beak and claws are black. The upper beak is notched near the tip, an adaptation which enables falcons to kill prey by severing the spinal column at the neck. The immature bird is much browner with streaked, rather than barred, underparts, and has a pale bluish cere.

Taxonomy and systematics

This species was first described by Marmaduke Tunstall in his 1771 Ornithologia Britannica under its current binomial name. The scientific name Falco peregrinus, means "wandering falcon" in Latin. Indeed, the species' common name refers to its wide-ranging flights in most European languages. The Latin term for falcon, falco, is related to falx, the Latin word meaning sickle, in reference to the silhouette of the falcon's long, pointed wings in flight.

The Peregrine Falcon belongs to a genus whose lineage includes the hierofalcons and the Prairie Falcon (F. mexicanus). This lineage probably diverged from other falcons towards the end of the Late Miocene or in the Early Pliocene, about 8–5 million years ago (mya). As the Peregrine-hierofalcon group includes both Old World and North American species, it is likely that the lineage originated in western Eurasia or Africa. Its relationship to other falcons is not clear; the issue is complicated by widespread hybridization confounding mtDNA sequence analyses; for example a genetic lineage of the Saker Falcon (F. cherrug) is known which originated from a male Saker producing fertile young with a female Peregrine ancestor some 100,000 years ago.

Today, Peregrines are regularly hybridized in captivity with other species such as the Lanner Falcon (F. biarmicus) to produce the "perilanner", a somewhat popular bird in falconry as it combines the Peregrine's hunting skill with the Lanner's hardiness, or the Gyrfalcon to produce large, strikingly-colored birds for the use of falconers. As can be seen, the Peregrine is still genetically close to the hierofalcons, though their lineages diverged in the Late Pliocene (maybe some 2.5–2 mya in the Gelasian).

Ecology and behavior

The Peregrine Falcon lives mostly along mountain ranges, river valleys, coastlines, and increasingly in cities. In mild-winter regions, it is usually a permanent resident, and some individuals, especially adult males, will remain on the breeding territory. Only Populations that breed in arctic climes typically migrate great distances during the northern winter.

The Peregrine Falcon is often stated to be the fastest animal on the planet in its hunting dive, the stoop, which involves soaring to a great height and then diving steeply at speeds of over 322 km/h (200 mph) hitting one wing of its prey, so as not to harm itself on impact. A study testing the flight physics of an 'ideal falcon' found a theoretical speed limit at 400 km/h (250 mph) for low altitude flight and 625 km/h (390 mph) for high altitude flight. Despite these theoretical values, measurements of real stoops by using radar resulted in maximum diving speeds of only 140 km/h (87 mph).

The life span in the wild is up to 15.5 years. Mortality in the first year is between 59–70%, declining to between 25–32% in adults. Apart from anthropogenic threats like collision with man-made objects, the Peregrine may be killed by large eagles or large Owls. The Peregrine Falcon is host to a range of parasites and pathogens. It is a vector for Avipoxvirus, Newcastle disease virus, Falconid herpesvirus 1 (and possibly other Herpesviridae), and some mycoses and bacterial infections. Endoparasites include Plasmodium relictum (usually not causing malaria in the Peregrine Falcon), Strigeidae trematodes, Serratospiculum amaculata (nematode), and tapeworms. Known Peregrine Falcon ectoparasites are chewing lice Ceratophyllus garei (a flea), and Hippoboscidae flies (Icosta nigra, Ornithoctona erythrocephala).

Feeding habits

The Peregrine Falcon feeds almost exclusively on medium sized birds such as doves, waterfowl songbirds and pigeons. Other than bats taken at night, it rarely hunts small mammals, but will on occasion take rats, voles, hares, mice and squirrels; the coastal populations of the large subspecies pealei feed almost exclusively on seabirds. In the Brazilian mangrove swamp of Cubatão, a wintering falcon of the subspecies tundrius was observed while hunting successfully a juvenile Scarlet Ibis Insects and reptiles make up a small proportion of the diet, which varies greatly depending on what prey is available. In urban areas, the main item of the Peregrine's diet is the feral pigeon, followed by other common city birds such as Common Starlings and Common Swifts.

The Peregrine Falcon hunts at dawn and dusk, when prey are most active, but in cities also nocturnally, particularly during migration periods when hunting at night may become prevalent. Nocturnal migrants taken by Peregrines include species as diverse as Yellow-billed Cuckoo, Black-necked Grebe, Virginia Rail and Common Quail. It requires open space in order to hunt, and therefore often hunts over open water, marshes, valleys, fields and tundra. It searches for prey either from a high perch or from the air. Once prey is spotted, it begins its stoop, folding back the tail and wings, with feet tucked. The air pressure from a 200 mph (320 km/h) dive could possibly damage a bird's lungs, but small bony tubercles in a falcon's nostrils guide the shock waves of the air entering the nostrils (compare intake ramps and inlet cones of jet engines), enabling the bird to breathe more easily while diving by reducing the change in air pressure. Prey is struck and captured in mid-air; the Peregrine Falcon strikes its prey with a clenched foot, stunning or killing it, then turns to catch it in mid-air. The Peregrine will drop it to the ground and eat it there if it is too heavy to carry. Prey is plucked before consumption.


The Peregrine Falcon is sexually mature at the end of the first year of age but in healthy populations they breed after two to three years of age. The pair mates for life and returns to the same nesting spot annually. The courtship flight includes a mix of aerial acrobatics, precise spirals, and steep dives. The male passes prey it has caught to the female in mid-air. To make this possible, the female actually flies upside-down to receive the food from the male's talons. The Peregrine Falcon is territorial during the breeding season; nesting pairs are usually more than 1 km (0.6 miles) apart, and often much farther, even in areas with large numbers of pairs. The distance between nests ensures sufficient food supply for pairs and their chicks. Within a breeding territory, a pair may have several nesting ledges; the number used by a pair can vary from one or two to seven in a 16 year period. The pair defends the chosen nest site against other Peregrines, and often against eagles or ravens.

The Peregrine Falcon nests in a scrape, normally on cliff edges or, today regularly in many parts of its range, on tall buildings or bridges. Cliff nests are generally located under an overhang, on ledges with vegetation, and south-facing sites are favored. In some regions, as in parts of Australia and on the west coast of Northern North-America, large tree hollows are used for nesting. Before the demise of most European peregrines, there was a large population of peregrines in central and western Europe using the disused nests of other large birds. The female chooses a nest site, where she scrapes a shallow hollow in the loose soil, sand, gravel, or dead vegetation in which to lay eggs. No nest materials are added. In remote, undisturbed areas such as the Arctic, steep slopes and even low rocks and mounds may be used as nest sites. The man-made structures used for breeding closely resemble the natural cliff ledges that the Peregrine prefers for its nesting locations.

Mostly three to four eggs (range 1-5) are laid in the scrape. The eggs are white to buff with red or brown markings. They are incubated for 29 to 33 days, mainly by the female. The male also helps with the incubation of the eggs over day, but at night only the female incubates. The date of egg-laying varies according to locality, but is generally from February to March in the Northern Hemisphere, and from July to August in the Southern Hemisphere (the Australian subspecies macropus may breed as late as November and equatorial populations may nest anytime between June and December). The female generally lays another clutch if the eggs are lost early in the nesting season, though this is extremely rare in the Arctic owing to the short summer season. As a result of some infertile eggs and natural losses of nestlings, the average number of young found in nests is 2.5, and the average number that fledges is about 1.5.

After hatching, chicks are covered with creamy-white down and have disproportionately large feet. The male, which is called the "tiercel", brings food to the female and chicks, but the chicks are fed by the female, which stays at the nest and watches the young. The hunting territory of the parents can extend a radius of 19 to 24 km (12-15 miles) from the nest site. Chicks fledge 42 to 46 days after hatching, and remain dependent on their parents for up to two months.

Relationship with humans

The Peregrine Falcon became an endangered species because of the use of pesticides, especially DDT during the 1950s, 60s, and 70s. Pesticide biomagnification interfered with reproduction, thinning eggshells and reducing the number of eggs that survived to hatching. The organochlorine build-up in the falcon's fat tissues would result in less calcium in the eggshells, leading to flimsier, more fragile eggs. In several parts of the world, such as the eastern USA and Belgium, this species became extinct as a result. Peregrine eggs and chicks are often targeted by black marketeers and unscrupulous egg collectors, so it is normal practice not to publicize unprotected nest locations.

The Peregrine Falcon was used in falconry for more than 3,000 years, beginning with nomads in central Asia. Due to its ability to dive at high speeds, it was highly sought-after and generally used by experienced falconers. Peregrine Falcons are also occasionally used to scare away birds at airports to reduce the risk of bird-plane strikes, improving air-traffic safety. The Peregrine Falcon is featured on the Idaho State Quarter, in recognition of its efforts in its recovery.

Recovery efforts

In the USA, Canada and Germany, Wildlife services in Peregrine Falcon recovery teams breed the species in captivity. The chicks are usually fed through a chute or with a hand puppet mimicking a Peregrine's head, so they cannot see to imprint on the human trainers. Then, when they are old enough, the rearing box is opened, allowing the bird to train its wings. As the fledgling gets stronger, feeding is reduced forcing the bird to learn to hunt. This procedure is called hacking back to the wild. To release a captive-bred falcon, the bird is placed in a special cage at the top of a tower or cliff ledge for some days or so, allowing it to acclimate itself to its future environment.

Worldwide recovery efforts have been remarkably successful. The widespread restriction of DDT use eventually allowed released birds to breed successfully. The Peregrine Falcon was removed from the U.S.Endangered Species list on August 25, 1999.

Current status

Many Peregrine Falcons have settled in large cities, including London, Ontario, Derby, Brisbane and Cologne, and all across the U.S., where they nest on cathedrals, skyscraper window ledges, and the towers of suspension bridges. At least 18 pairs nested in New York City proper in 2005. In Virginia, state officials working with students from the Center for Conservation Biology of the College of William and Mary in Williamsburg successfully established nesting boxes high atop the George P. Coleman Memorial Bridge on the York River, the Benjamin Harrison Memorial Bridge and Varina-Enon Bridge on the James River, and at other similar locations. Thirteen new chicks were hatched in this Virginia program during a recent year. Over 250 falcons have been released through the Virginia program. In the UK, there has been a recovery of populations since the crash of the 1960s. This has been greatly assisted by conservation and protection work led by the Royal Society for the Protection of Birds. Peregrines now breed in many mountainous and coastal areas, especially in the west and north, and nest in some urban areas, capitalizing on the urban pigeon populations for food.

  • The peregrine is the fastest bird on record reaching horizontal cruising speeds of 65-90 kmh ( 40-55 mph) and not exceeding speeds of 105-110 kmh (65-68 mph). When stooping, the peregrine flies at much greater speeds however, varying from 160-440 kmh (99-273 mph)!

  • Both the adult male and female help care for the nestlings.

  • A male Peregrine is referred to as a "tiercel" meaning third. The female, which is slightly larger and more powerful than the male, was preferred, and only she is given the title of "falcon."

  • By 1968, the Peregrine population was completely eradicated east of the Mississippi River.

  • Peregrine falcons are about the size and weight of a crow.

  • The nest itself is little more than a shallow scrape, shaped by the birds in soil or accumulated debris.

  • Courtship behaviors can be seen all seasons of the year but especially during courtship as the mated pair approach and greet each other after being apart.

  • When the young falcons are 3 weeks old, Division of Wildlife biologists examine the birds to determine their sex and take a blood sample used to track DNA and possible chemical contaminants. Biologists also equip each bird with metal leg bands that are used to identify the falcons in the future.

  • A young falcon in the nest is called a nestling or an eyas (pronounced I-es). They are covered by white down when they hatch, which is replaced by feathers in three to five weeks.

  • Prey is caught in flight. Using its great speed, the falcon delivers a powerful blow to its prey with a half-closed foot. It retrieves the dead bird either in mid-air or after it falls to the ground.

  • They have very good eye sight ~ they can spot a meal up to a mile away.

  • Their range is about 30 miles with their nest in the center of their range. They do not like other falcons within 3 miles of their nest site.

  • Use same nest year after year, mate for life.



EGG 1 – Monday, April 1 at 4:38pm

Egg 2 – Thursday, April 4 at 4:36am

Egg 3 - Saturday, April 6 at 1:33am

Egg 4 – Monday, April 8 at 1:09pm

The eggs laid in the first clutch in 2013 were removed on May 20, 2013. They were candle spotted and all four were not viable.






EGG 1 – June 4

Egg 2 – June 6 at 3:05pm

Egg 3 – June 8 at 10:02pm






Egg 1 – Wednesday, March 28 at 3:19pm

Egg 2 – Friday, March 30 at 7:58pm

Egg 3 – Sunday, April 1 at 4:52am

Egg 4 – Wednesday, April 4 at 8:59am







Lucy, 39/Y Fed ID 1687 30552



Lola, 40/Y Fed ID 1687 30553




Michael, 10/P Fed ID 1126 14269



** WHO'S WHO **

Our adult female peregrine falcon's name is W.C. She is from Lima, Ohio, hatched April 30, 2007. W.C. stands for W COIL, the building where she hatched and fledged from in Lima.

M.P. stayed through the winter in 2012 with W.C. They would visit off and on and he stayed until a new adult male showed up.

On March 16, a new falcon began nesting in the box. He had bands, tagged *P/*H BLACK/GREEN. He is not an intruder anymore. He is now seen daily here, and is the new adult male and taking care of WC while she is covering her egg (s) and staying close to protect his new home. He has been bringing a meal to WC every day.




In 2004, 3 Peregrine Falcon chicks were raised by Stelco(female) and Alimak(male) at our Eckert Power Station.