Fledgling on lower ledge!

June 12, 2014 in On the Clock Tower

After a few days remaining in the nest box, the third and final chick fledged on Thursday.  In the late afternoon, had a nice opportunity to observe the fledgling on a lower ledge closer to Merrimack Street.  It was testing its wings and hopping along a ledge.  Not only a treat to watch from a close vantage point, but also had the chance to observe and document the black/green bicolor leg bands used on peregrines in Eastern United States.  This fledgling has black numbers (59) over green letters (BD).

More photos: http://www.pbase.com/birdshots/image/156086349

There is an international protocol in North America for colored leg bands on Peregrine Falcons. The color indicates the origin or subspecies for chicks banded in the nest. The colors in the protocol and their meaning are:

Red Captive bred
Black/red bicolor Eastern United States
Black/green bicolor Eastern United States
Blue Tundra Peregrines
Black/blue bicolor Tundra or Anatum captured off the breeding grounds or subspecies unknown
Green Peale’s Peregrines
Black Anatum Peregrines

Characters used on the Peregrine bands are letters and numbers, with one character on the top of the band and one character on the bottom of the band. Older bands may have these characters either vertical or tipped ninety degrees to the left. Newer bands have all vertical characters.

Fledgling on nearby ledge!

June 11, 2014 in On the Clock Tower

The fledglings continue to be seen in a variety of locations around the Clock Tower with one of first two fledglings remaining for a day on a nearby ledge.  The older fledgling has flown to upper ledges and even atop the weathervane at the top of the Clock Tower!

Peregrine chicks; 2 fledge over weekend!

June 10, 2014 in On the Clock Tower

The peregrine chicks took their first flights away from the nest over this past weekend. Not always choosing to or being capable of returning to the nest site, they will be found in different locations around the Clock Tower like these 2 on a nearby lower ledge!

Peregrine fledglings experience the joy of flight!

July 9, 2013 in Peregrines at 250 Canal St.

The fledglings are having a blast learning how to fly.  They have abundant nearby rooftops to practice short hop flights, glides and landings.  You can almosy sense their joy as they make endless short hop flights.  What a pure delight to watch!

5 photos posted:  http://www.pbase.com/birdshots/image/151582749

More Butterfly flight patterns!

June 6, 2012 in Near the Clock Tower

On Wednesday afternoon we finnaly were graced with bright sunshine.  What a joy to watch the peregrine chicks again as they hopped, skipped, jumped and even got airborne at the west end of the New Balance west wing roof.  Fascinating to watch how the parents guard from a safe but close distance.  Kind of like attentive lifeguards at the beach, the adult Peregrines miss nothing!

8 Photos posted: http://www.pbase.com/birdshots/image/143865500  Click “next” in upper right to advance frames.

According to Cornell’s Birds of North America online entry for Peregrines: Flight progresses from Butterfly-Flight (1–2 d after first flight) to Flutter-Glide (3–9 d) to Powered Flight (15–25 d). Butterfly-Flight appears to be weaker form of Flutter-Glide associated with in-complete development of flight feathers and pectoral muscles. Pursuits gradually become more sustained and range farther from nest. Adult pursuit is accompanied by Begging vocalization. During first 2 wk of flight, young birds’ pursuit of parents takes precedence over most other activities. Young will even pursue parents during territorial defense (Sherrod 1983).

As young become more aggressive toward food-delivering parents, adults sometimes begin to drop both dead and live birds in air. Young pursue and catch these items. Has been interpreted as parental training of young to hunt, but may simply be way for parents to avoid being mobbed by hungry young (Sherrod 1983).

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