Advertise Here

Eye On Boise

Posts tagged: Peregrine Fund

Peregrine falcon chicks explore ledge outside their downtown nesting box, as they prep to learn to fly

A peek at the Falconcam just now showed all three Peregrine falcon chicks out of their nesting box, exploring the concrete ledge outside. According to the Peregrine Fund, this is natural behavior as the chicks prepare to learn how to fly. “Like toddlers learning to walk they must test their limits,” the fund reports. The ledge outside the nesting box, which is atop the 14th floor of One Capitol Center in downtown Boise, extends the length of the building and is about 40 inches wide, providing lot of room for the chicks to practice flapping their wings and taking short practice hops.

The three chicks are a couple of weeks away from fledging, or taking their first flights. You can watch live here.

Falconcam update: Fuzzy chicks getting bigger very quickly

The three very fuzzy, white down-covered peregrine falcon chicks in a downtown Boise nesting box high atop an office tower are growing at a remarkable rate; you can see them here. The Peregrine Fund reports that the chicks typically weigh only an ounce and a half when they hatch, but by the time they fledge and fly out of their nests for the first time, they’ll be 18 inches tall and have a wingspan of more than 3 feet. At fledging, female peregrines typically weigh more than two pounds, and males a little under a pound and a half.

When they fly, peregrines can reach speeds of more than 200 mph as they dive for their prey in mid-air.

Three chicks have hatched in downtown Peregrine falcon nest

Three chicks have hatched in the Peregrine falcon nest that’s high atop One Capitol Center in downtown Boise; the fourth egg is not expected to hatch. The Peregrine Fund reports that the three chicks had emerged by Wednesday; the parents will eventually roll the fourth egg out of the “scrape” area and off to the side of the nest box.

Viewers on the “Falconcam” now can see the adults brooding and feeding the nestlings, which need their parents to keep them warm for about 10 days until they can regulate their own body temperatures. “The yolk inside the egg, which nourished the embryos during incubation, was absorbed into the body cavity of the chicks immediately prior to hatching,” the Peregrine Fund reports. “Although the yolk keeps the chicks well-nourished for a few days, their begging instinct kicks in right away. The adults feed the chicks bits of food by tearing off small chunks of meat and delicately placing them in the chicks’ beaks.” You can watch live here.

First egg has hatched in downtown Peregrine falcon nest

The first of the four eggs in the downtown Peregrine falcon next hatched at 3 this afternoon, the Peregrine Fund reports, and the others are expected to follow soon after. As the first hatched, the second had already “pipped,” which is the first stage of the hatching process.

According to the Peregrine Fund, “The first egg was laid on March 26th and the fourth and final egg was laid on April 2nd when incubation began in full earnest. If all of the eggs were fertile they should hatch within the next day or so.” The nesting box is on a ledge high atop One Capitol Center downtown; you can watch live here on the Falconcam.

Sad news on one of four peregrine falcon chicks downtown

There’s some sad news on the peregrine falcon front downtown: One of the four fledglings, all of whom had successfully fledged and were trying their wings and learning hunting skills in downtown Boise, has died after crashing into a window. Idaho Fish & Game reported today that the juvenile female died this morning; three males remain. “Our Fish and Game Department has been doing an incredible job following up on the falcons this year,” the Peregrine Fund reported. “After rescuing all four of the fledglings and banding them, it is unfortunate that they also had to report on the first mortality.”

Young peregrine falcons face steep odds, the fund said, with more than 50 percent of young peregrines, and raptors in general, not surviving their first season in the wild. After that first season, the mortality rate drops to about 12 percent.

A pair of peregrines laid four eggs in a nesting box atop One Capitol Center in downtown Boise this spring; the first three eggs hatched May 12, and the fourth the next day. Between June 17 and June 20, three of the chicks were rescued by Idaho Fish & Game after being blown off the building ledge by strong winds; another, one of the males, was rescued on Wednesday after it became stuck behind a structure on the roof of the Banner Bank building, two blocks north of its nest. All the chicks were banded for identification.

The Peregrine Fund and Idaho Fish & Game maintain a “Falcon Cam” where people can watch the peregrine family in its nest; on June 24, after all four chicks had moved out of camera range, it replaced the live feed with a photo gallery.

All four peregrine falcon chicks downtown have now hatched…

Here’s the latest update from the Peregrine Fund on all the activity over a busy Mother’s Day in the peregrine falcon nest that sits high atop a downtown Boise building:

“It was a busy Mother’s Day for the female Peregrine Falcon! She had three new chicks in the nest on Sunday and gained another one on Monday. Both the male and female will brood the four chicks for about 10 days, depending on the weather. The young birds are not yet capable of regulating their own body temperatures, so they need to sit under the adults for warmth. The young ones also can huddle together to keep warm. The empty shells visible in the nest today will be blown out of the nest or removed by the adults along with feathers, bones, and other litter.”

You can watch live here. Early this morning, I found it very hard to stop watching the adult feed the fuzzy white chicks, a couple of whom were stretching their mouths up expectantly, while the others alternately snoozed, bobbed their heads, or were stepped on by their siblings as they cuddled together in a rough pile of fuzz.

Peregrine chicks hatch downtown

At least some of the four eggs in the peregrine falcon nesting box atop a downtown Boise skyscraper have hatched, and tiny, fuzzy chicks are now being brooded, or kept warm, by their mother on this Mother’s Day.  You can watch live here. There’s some info here on how peregrine falcon chicks grow and develop and what to expect in the coming days and weeks. When I peeked at the webcam this afternoon, the mom was brooding the chicks, then flew out of the nest and returned with some food, ate most of it, and fed some of it to the softly cheeping chicks, concentrating on one of the two. There appeared to be two chicks and two remaining eggs still to hatch.Then the proud mom settled back in, huddling over the chicks and eggs.

Hatch nearing for four peregrine falcon eggs in downtown nesting box…

The chicks in the four eggs in the peregrine falcon nesting box atop a downtown Boise building are preparing to break out of their shells, the Peregrine Fund reports this morning. When I looked at the Falconcam, an adult falcon was looking down expectantly at the eggs. Click below for more info on what’s happening, and you can watch live here.

Two peregrine falcon chicks fledge from downtown nest box

Two peregrine falcon chicks born in a nest high atop a downtown Boise office tower fledged this morning, the Peregrine Fund reports, testing their wings between 6 and 7 a.m. today. The young birds are doing well, and a third is thinking about following them. Anna Ravegum Taafe of Idaho Fish & Game reported that the two fledglings are perched safely on tall buildings downtown, and their watchful dad is nearby. One made it to a building a block away that's higher than the nest box at One Capital Center. You can check out the nest box on web-cam here, but there may be little activity there, as the third chick is out on a wide ledge, where the young birds have been flapping their wings and taking short hops to experiment with flying. A “fledge-watch” team is prepared to rescue any fledglings that land on the ground or in an unsafe location.

Three peregrine falcon chicks hatch in nest atop downtown Boise office tower

Three chicks hatched over the weekend in the peregrine falcon nest high atop a downtown building, One Capitol Center at 10th and Main streets. You can see their progress, and that of the parents who are  carefully tending them, on a live webcam here, sponsored by the Peregrine Fund, Idaho Fish & Game and Fiberpipe. The chicks weighed about an ounce and a half when they hatched, but will be full grown by the time they leave the nest. According to the Peregrine Fund, by the time they fledge in July, the young falcons will be 18 inches tall and have a wingspan of more than 3 feet. Young falcons typically fledge five to six weeks after hatching.

For now, the adults are brooding the chicks, keeping them warm as they're too small to regulate their own body temperature; that will continue for about 10 days. The nest box, on the 14th floor of the office tower, has been used by wild peregrine falcons each spring since 2003; falcons typically nest on rocky cliffs or tall buildings like the one in Boise that simulate a rocky cliff environment.

Once an endangered species, the peregrine falcon was restored through a captive-breeding and release program by the Peregrine Fund. The fast-flying bird of prey, known for its spectacular high-speed dives, was removed from the endangered species list in 1999. Today, there are about two dozen breeding pairs in Idaho.

Get blog updates by email

About this blog

Betsy Z. Russell covers Idaho news from The Spokesman-Review's bureau in Boise.

Named best state-based political blog in Idaho for 2013 by The Fix

Latest comments »

Read all the posts from recent conversations on Eye On Boise.

Search this blog
Subscribe to this blog
Advertise Here