Scholarships……

5 November 2021

We want to give another scholarship! How about you?

Make a donation by visiting Bob at Morro Rock, sending us a check (address is at the bottom) or pressing the DONATE button to the right.

Our previous CalPoly Scholarship students wholeheartedly want us to give another scholarship too! We have heard from some of our Scholarship students recently and they know what a difference it makes. They are a great example of what your money has made possible.

Our first CalPoly Scholarship Student was Wren Thompson will be going to the University of Washington to get a Master of Arts in Museology.  You may know that museums make the world a better place by offering broad educational experiences. 

Our second scholarship student, Nicole Robin Durtschi, has been “working as a biologist at Oceano Dunes, with the breeding Snowy Plovers and Least Terns! It’s been a very unique experience, with plenty of challenges, but of course plenty of amazing experiences. Being able to watch chicks grow up is pretty incredible 🙂 And spending most days out on the beach has really helped me learn my shorebirds!” She is an avid birder now. I’d love to visit with her to learn about the Least Terns and Snowy Plovers this coming year.

With a look at two of our students that you have contributed to, I ask you to contribute now to our Cal Poly Scholarship by pressing the DONATE button ON THE RIGHT or sending us a check made out to PCPW and mailed to PCPW, 765 Center Ct., Morro Bay CA 93442.

Happy trails, Bob and Heather

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Last to fledge……

9 June 2021

The south side chick, the only one to this new pair of falcons fledged this morning at 9:40 AM traversing the face of the Rock from left to right in a smooth glide landing on a chalky bluff 300 yards from the nest site. The landing was on a near vertical face with no crashing or tumbling, he stuck the landing! A few more short fifty yard flights ending with the last on the top of a large boulder on the sky line. 

Photo by Petra Clayton

Soon everyone started to show up. All this time the adult female had been flying overhead in large circles chasing gulls and vultures or anything that might come near her young. She at times would stoop on her chick trying to get it to fly more. The young would not budge.

She later brought the chick a small shore bird. Everyone was thrilled to see it rip into the prey.  After consuming all the body and organs, he then swallowed each leg whole, thighs, leg and toes! 

Happy trails, Bob

Item: Jack and Petra Clayton have a Flickr website where you can see her latest photos of the peregrines. Trying to adjust the shorebird leg to gulp it down takes some juggling!

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South side debut…

25 May 2021

The south side chick made its debut at the diving board hole at 21 days old. That would be three weeks behind the north side chicks. 

Peregrine chick on South Side Photo by Gordon Robb

On the north side, the three young have been flying for four days. They are 48 days old. It looks like we have two females and one male. 

A lot of visitors are showing up to view the north side young flying and being fed. Every hour or two it is complete pandemonium… screaming, flying, chasing the parent to seize prey from its talons in mid-flight. It might last ten minutes, then silence to eat and rest. After an hour or two it starts all over again. 

Transfer from adult peregrine to juvenile Photo by Cleve Nash

Today with the many visitors, we had three spotting scopes up with folks waiting for a turn. By the end of the week, I should have the big screen up and going. If you plan to visit the “rock” at Morro Bay and see these magnificent birds, you can’t see everything in ten minutes. If you want to see the good stuff, bring a chair.

Happy trails, Bob

Item: On the south side eyrie, we’ve only seen the one chick. There could be more. Stay tuned.

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Remembering Cleve…

16 May 2021

Cleve Nash and Bob Isenberg at Morro Rock, Morro Bay CA

This past week, our friend, Cleve Nash completed his life at age 79. He was a self-taught photographer and naturalist who donated so many of his very fine photographs to our Pacific Coast Peregrine Watch website here. Living in Cambria and Santa Margarita, he traveled to where the birds that he loved to photograph were, Shell Beach, Bob Jones Trail, Atascadero Lake, Santa Margarita Lake, etc.  Some of his favorite birds were the White-tailed Kites at Isla Vista.

Morro Rock was a place he’d always come to see the peregrines court, nest and rear chicks over the years. We had expected him to show up as the chicks were ready to take their first steps onto the nest site ledge to show themselves off. It was his tradition. Bob and I use his photographs still because they’re the best! 

He was a gracious and generous person who always had time to be with us. He had a great dry sense of humor. We cherish the twenty plus years we’ve known him. We’ll always hold him in our hearts.

Happy trails, Bob and Heather

Cleve Nash
Cleve Nash

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Chicks ahoy…

5 May 2021

News flash! Gordon Robb, ardent falcon observer, called late this afternoon to tell me he saw a falcon chick in the north side “bowling ball” nest site.

“I’ll be right there!”

Six minutes later I arrive and now two chicks are visible. In twenty minutes, we have four scopes, two cameras, five sets of binoculars! Tomorrow will see a lot more optics.

Happy trails, Bob

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Right on time…

2 May 2021

I was not too far off on my timing of the birds hatching. Yesterday, May 1st, I observed the male falcon or tiercel bring in fresh prey and stash it in a larder, one of a few small holes they store food in. Neither of the falcons came to retrieve it in the two hours before I left the Rock.

Photo by Cleve Nash

This morning I saw the female bring into the nest site a plump, juicy morsel. So the chicks must have hatched last night or this morning. In about ten days to two weeks the young will come to the edge of the nest site to defecate over the side. This is something to see. The young fearless standing on the edge inches from a 300 foot fall. The young normally fly in forty four days on a normal year which will be about June 13-14.

 See you at the Rock.

Happy trails, Bob

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Guessing…

30 March 2021

For the past week, the behavior of the south side female falcon is consistent with egg laying, i.e. a couple of hours in the nest site, then comes out, flies around as usual and perches. Every thing you would do on a normal day. 

Today, she was three plus hours in the eyrie and the tiercel brought in prey after an aerial food exchange in front of the nest site. She lands at the nest site. However, she does not leave and go to a “dining rock” with prey which would be normal procedure. Instead she takes a few quick bites at the edge of the nest site opening then returns to the back of the eyrie. 

If she is incubating, normally she would leave with prey to eat and the male would take his turn on the eggs. But being a young pair, who knows! He might think she’ll do it all. 

When I left at 3PM, she was still in the nest site. He was sitting on a rock 50 yards away. 

If this is the beginning of incubation, and I think it is, chicks should hatch around the first of May. And be visible two to three weeks after that. 

Happy trails, Bob

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Knitting…

3 March 2021

After months of watching and waiting with nothing to write about, today I was rewarded. I spent 90% of my time on the south side of Morro Rock logging in four to six hours a day trying to see if the new pair of falcons were going to breed and nest this year.

On a normal year the birds start breeding on the first of the year. The north side pair were a month late starting around February 2nd, 2021. The south side pair spent January and half of February on the ocean side of the Rock where they cannot be seen, but in the last two weeks they have been on the south side where they are readily visible. In that time the tiercel made attempts at breeding, but never landing on her.

Today was different. On the chimney within full view of eight people, two full copulations within four minutes, a total of three in fifteen minutes to a standing ovation.

Copulating peregrine falcons Photo by Cleve Nash

“Oh, to be young again.”

I turned eighty this past January. I remember when I didn’t give her time to take her socks off. Now she has time to knit a pair!

Happy trails, Bob

Item: I don’t mean to neglect the north side pair. They have been breeding continually since early February and I believe have chosen the “cathedral hole,” the site of last year’s nest site.

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First sign of bonding…

18 November 2020

The peregrine falcons have been scarce on the “rock” for the last month or so. This is mainly due to all the migrating waterfowl coming into the back bay estuary during the fall and winter migration. I suppose now this is their holiday feast because we don’t see them returning to the “rock” with prey. 

Just this morning two Bald Eagles were reported eating a coot on the pickle weed marsh. But this morning while watching surfers, I spotted what looked like a single falcon high on the skyline near where the waves break on the “rock.”

Photo by Bob Isenberg

With a closer look with my 10×42 binoculars, there were two falcons perched close to each other. This is the time of year they start renewing their bonds. Breeding can begin in the next month or two. The earliest I have seen copulation was 30 November ten or twelve years ago. For this pair of falcons, the first breeding of this year was 7 January 2020. This coming year at Morro Rock we should have two breeding pairs now that the south side tiercel has molted into adult plumage. 

Photo by Heather O’Connor

Happy trails, Bob

Item: The two photos of the “rock,” one taken with an iPhone and the other with my Nikon P1000. The falcons are at a distance of 302 yards from me.

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Trip to PBRG…

17 June 2020

Yesterday, we took a drive to the Predatory Bird Research Group located in Santa Cruz, California, about a three hour drive to meet with Zeka Glucs, Ph.D., the Director, at her home to deliver the young falcon remains for further examination which would include DNA samples and mercury analysis. These are accomplished by removing three small scapular feathers from the back area for DNA.

She sexed the young falcon as a male by measuring the outside diameter (OD) of the tarsus (lower leg) and the beak from cere to tip. Males will be smaller in both measurements by mere millimeters.

“The Ken Norris Museum was very happy to add it to their collection. They love our specimens because they always come with so much associated data! For mercury we use the tip of the 4th secondary feather. It was grown while in the nest so we can estimate the area where their food was captured during that time. Generally mercury is associated with the marine food web so it will be valuable to have your Morro Rock peregrines represented.” Zeka Glucs

Happy trails, Bob

Item: From a meeting 8-10 years ago, I had met Zeka as a fledgling biologist at Morro Rock and helped her find the falcons. It’s such a pleasure meeting passionately involved people on their return trips to Morro Rock and hear how they have pursued their studies. 

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