!!! Rescue at Holcim

July 11, 2010 - Mississauga - St Lawrence Cement

Marion Nash Reports:

Just wanted to let you know that we had to rescue one of our chicks last
night. He was seen by one of our shift crew hopping along one of our
plant parking lots near the maintenance shop. He was safely and carefully
rescued and placed in a box. He was then taken up to the top of a silo.
They left the box for the bird to hide in given the night skies and
potential for predators. As of 5:30 a.m., the chick was seen sitting on
the ledge of the silo. I am attaching a photo. He is safe and sound and
hopefully keeps air under his wings in the days ahead.

Barb Smith


!!! Banding Day Success!! 4 hatchlings!!

June 18, 2010 - Mississauga - St Lawrence Cement

Mark Nash Reports:

What a great day indeed!!With over 50 people assembled to witness the event, 4 very healthy hatchlings were removed from the nest ledge today, banded, sexed, weighed and returned to their parents in good time.

With a huge thank you to Barb, Dave Armando and all of the staff at Holcim, along with a big thank you to Mark Heaton from the OMNR and all of the helpers, the young baby hatchlings were banded and returned to their parents.

A great big thanks to John and Brian, the rock climbers who repelled down from the upper roof of the superstructure down to the nest ledge level, safely scooped up the hatchlings and made it possible for us to band the chicks.

The new resident adult peregrine parents were both on the scene to “supervise” the extraction of the hatchlings. Poor John Miller was once again the “villain” that had to stay on the nest ledge until after the banding to distract the resident parents while their hatchlings were being banded.

A great day in all, and FOUR very healthy chicks (and Holcim’s newest family members)!!

While the hatchlings were a little younger than we had aged them at via the earlier photo that was sent into us to get an age on them, at least this year we were able to band them before it was too late because of their advanced age as last year.

Three males, and one female, named:
Armando, 22 days old, 630 grams
Clarkson ll, 23 days old, 710 grams
Eva, 24 days old, 785 grams,
Holcim, 19 days old, 460 grams


!!! Congratulations Holcim - you have a hatch!

June 03, 2010 - Mississauga - St Lawrence Cement

CPF Postmaster Reports:

We have just received wonderful news from Mississauga from Armando and Barb at Holcim that there has in fact been a hatch and there are at least three hatchlings in the nest.
A difficult site to monitor for al due in part now that the resident peregrines are no longer using the nest box, as the new resident peregrines has decided to utilize a roof top high up on another part of the facility. We have new photos from this year taken yesterday - (Thursday June 3rd) with a huge thank you to Armando and his efforts, that show three little hatchlings being attended to my mom. Given that they are all sitting upright in a semi circle, (have able to actually position themselves in this fashion), they are obviously also semi-mobile, and as such we know that they are at least ten days old as of June 3rd.

Congratulations Holcim!!!


!!! Interesting Happenings

April 03, 2010 - Mississauga - St Lawrence Cement

Bruce Massey Reports:

On my way home from Burlington, I stopped off at the Cement Plant at Clarkson. When I got there I had one Bird (Female) flying over the Plant between the Silos and the Main Plants.  A second bird (Male) joined with the above Bird. At first I thought I had a pair that were at the Breeding Flight stage. That was until much to my surprise, a 2nd Male joined In. The strange thing is that the intensity of the Battle wasn’t as intense as some I have witnessed in the past.  This was more like what I have seen on a couple of occasions over  the years, not that I can confirm this, but  my impression was that this was a returning  Young Bird from  former Years.  The Adults are not trying to drive the Interloper out and even kill them, but to just drive them from the Territory.  The Female seemed to be the aggressor and the battle continued for the better part of  an hour & half.  During this time, the Stoops were spectacular, Oflten they would start somewhere around the tops of the Silo, and cumulated almost at Ground Level, they also used up most of the entire Property. They also seemed to take “Time Outs” and it was obvious that they were getting very warm, as they would rest with their wings slightly hanging out. I left the area around 11:15 Hrs. when things seemed to quiet down.

Another Successful Year - with a twist.

June 02, 2009 - Mississauga - St Lawrence Cement

CPF Postmaster Reports:

While the St. Lawrence pair have yet again eluded us and concealed the brunt of their activities, we have some good news to report never the less.  The  identified adult pair have once been successful in producing at least two offspring again this year, and as John and Armando report, the two hatchlings are ready to fly!  As reports came in from John from a far while working in the area, Armando was trying to get a ariel photo from above the nesting roof high up atop of the tower.  Both report that the activity was far from being still, as two very healthy hatchlings in full juvenile plumage were now being observed flapping their wings on the leading edges of the building high above the activity at the plant.

I have attached a photo to give you an idea as to the nest nest (or should I say the nest roof area) and the upper roof area that Armando needs to get to that would allow him a sneak-peek of the nest.  Its a long way down!

To the best of our knowledge, both juvenileshave now since  fledged successfuly.  Sadly, their sex is unknown, and they were not able to be banded due to their advanced age.


Do you have photos or videos of fledges or parents? Share them with us!

June 11, 2009 - Burlington - Lift Bridge

Matt MacGillivray Reports:

If you have photos of any of the CPF monitored nest sites, birds or fledglings in this exciting time, we would love to see them!  If you have older photos or videos from CPF events, like the 2009 Sportsman show, we would love to see those too.

We’ve got a flickr group that you can upload photos and short videos to.   If you have longer videos, upload them to youtube and tag them with cpf and peregrine and I will find them.

Example shot from the Sheraton Banding in the Flickr Pool -

peregrine hatchling

We might include some of the videos or photos in our updates, or around the site.  You could be famous!

Matt.