Showing posts with label Triborough Bridge. Show all posts
Showing posts with label Triborough Bridge. Show all posts

Friday, April 16, 2010

Red-tailed Hawk Updates--The Late Athena of Astoria, Mama and Papa in Briarwood, Rose and Vince, and Isolde at the Cathedral of St. John the Divine


The late Athena feeding her eyasses, May 2009


Wildlife rehabilitator Cathy Horvath, with an update on Athena's necropsy--

Hello everyone,

We just got a call from the DEC about the necropsy of Athena . It seems that she did not pass by getting hit by a car like the doctor that examined her had thought. She was poisoned by eating a rodent. Again.

I couldn't believe it, but all the testing that was done so far points to poison. There is one more test that they would like to do with the liver , but it is a very expensive test and they have to hold off for a while. They will be sending us the findings that they have so far, then we will post them to everyone . This is too to0 sad. So everyone please keep happy thoughts in your hearts that Athena's eggs hatch . Thank you to everyone for all the help and effort it took to gather her eggs up. It will be an amazing thing if they hatch !

Bye,

Cathy and Bobby

Thank you Cathy. I kept wondering what had occurred that caused Athena to be hit by a car after avoiding them all these years. And as it turns out, she hadn't lost her awareness of motor vehicles, but rather once again it is likely rat poison that has caused the passing of another of New York City's much watched and loved Red-tailed Hawks.

I still have my finger's crossed that we'll get a little miracle of a hatch from she and Atlas' eggs.

From Jeff Kollbrunner, long time watcher of Mama and Papa in Queens--

Hey Donna,

Here are some images of the nest, two are when Mama was still sitting on eggs taken on 4/5. The other two images were taken on 4/12 when I could see two of the nestlings at about 3-4 days of age with Mama.

Best, Jeff


As the first hawk progeny in Manhattan came from Pale Male, who is obviously pale as are some of his fledglings, we've always wondered where the darker hawks who mated with the pale ones came from. When I looked at this photo of Mama, it made me think of Isolde. There is something similar about their eyes. And as Mama and Papa have been in business for at least 16 years, it is possible that they have supplied some of those mates.



The other day, when I got Jeff's update that there were actually three eyasses on the Briarwood nest, I asked how often Mama and Papa produce three eyasses. Here is his response.-

Donna,

Mama and Papa typically have two eggs/nestlings on a fairly regular basis. The anomalies are as follows, they produced one egg/nestling on two separate occasions (seasons) and that was when there was human interference with those nests and they had to rebuild and have second clutch. Last year they had two nestlings and one perished in the nest at about two weeks and the second nestling successfully fledged. However, they have produced three eggs/nestlings more of late, this years nest and two years ago all three successfully fledged.

All the best, Jeff


That is a sweet hawk expression if I ever saw one.

Some thoughts on Rose and Vince of Fordham from Pat Gonzalez our contributor who keeps her eyes peeled at the New York Botanical Garden--
Donegal:

I saw Rose and Vince at the Garden two weeks ago flying above the museum building. But sadly, I've never seen them sitting on the nest there.

They both have been working on the nest at Fordham and mating at the NYBG, (Look at my youtube video. That day, I saw them mate three times.)

http://www.youtube.com/watch?v=26kJMIrIHbo

With this in mind, could Vince possibly be sterile?

Pat,

It may be that Vince just isn't quite old enough to be highly fertile and therefore no eggs were produced. I'd hate to call him sterile exactly, as that seems to be insinuating a more permanent condition. Though technically that could be the temporary case as he is still very young. Perhaps a possible immature sperm count would be a good way to put it.


Next up the nest at the Cathedral Church of St. John the Divine.

Photo by Mitchell Nusbaum
Hawkwatcher and astronomy buff Mitch Nusbaum's comment-Around 3:00PM, Thursday, a hawk, who I assume to be Isolde was visible from this spot. What could she be doing? (I do think it is Isolde. D. B.)


Different formels have different styles and Isolde very seldom spends much time perched on the lip of the nest unless there has been a hatch. Though neither Mitch nor Rob Schmunk, http://bloomingdalevillage.blogspot.com/ , (click the link for Rob's latest post), last I heard, have seen the poking motions of feeding. Isolde may be waiting for an eyass to make its way fully out of the shell or the eyass is unencumbered but has not started to beg as yet. They ordinarily don't start begging immediately.


I'm back in NYC though currently it is the 40's and raining actively. I'll try to get over and check on the Cathedral nest tomorrow, Saturday.


Donegal Browne

Monday, March 08, 2010

Red-tail Updates:Nest for Washinton Sq. Park RTs, Lola Sits, Cathedral Nest, Triborough Nest


Photo by Zach L.
Hello Donna,

I believe you commented on my blog "Old-NYC" sometime ago on a picture I posted of a Red Tailed sitting atop Judson Memorial Church off of Washington Sq Park. Anyway, I periodically see one or two large Red Tails flying around the park (I've seen them for about 2 years now) and just today I spotted one with two sticks in it's beak landing atop 1 Fifth. It appears they are in the process of building a nest at the very tip top of the building, just below the brick spire on the top. I've seen them perched on 1 Fifth many times but I've never noticed a nest.

- Zach

www.oldlongisland.com/

Thanks Zach for the exciting news! We've been wondering when the Washington's Square Park hawk might find a mate and nest. It looks like you've zeroed in on the spot. Keep your eyes peeled and keep sending in your updates. We'll all be waiting.


Photo by Zach Lemle
Hello Donna,

I sent the email about the two hawks that are building a nest on 1 Fifth Ave next to Washington Square Park...I managed to get some photos today so I thought I'd send a couple to you...

http://farm5.static.flickr.com/4013/4410201845_f5547872be_b.jpg

http://farm5.static.flickr.com/4053/4410968916_1b20ccb79e_b.jpg

http://farm5.static.flickr.com/4033/4408798513_fed4391d98_b.jpg

- Zach
www.oldlongisland.com


Photo by Zach Lemle

And another beautiful shot from Zach from the roof. We can't wait to see and hear more Zach so keep you eyes peeled and keep us updated.

And from Central Park Hawkwatcher Ed Tindale--

I'd thought that Lola wasn't leaving the nest for the last couple of days but only stayed until dusk. Today I stayed watching the Fifth Avenue nest of Pale Male and Lola until it was dark and I believe I can confirm that Lola never left the nest and is now sitting.


Great news, thanks for you vigilance Ed!


And from Morningside resident Lara Larson, big news about Isolde and Norman--

Donegal,
I was excited last week when I was walking my dog, Tag, and thought I saw one of the St. Andrew's nest hawks fly into the nest at the Cathedral bringing a stick. I decided to stand and watch for them on Tuesday and sure enough the hawks are working on the nest. I saw a hawk bring three sticks and put them in the nest. I d0n't know which hawk. I can't tell them apart yet.

Lara

Super news Lara, keep watching and let us know how it's going. If you happen to have a camera try for a few photos too! They don't have to be perfect as they are for documentation so don't worry about that aspect.

And Isolde roosts once again on the fire escape, an update from Nara-

Hi Donna,
Our friend is back tonight after a long hiatus (she last roosted with us during that first snowstorm several weeks ago, on a Wednesday).
So what does this mean? Do they roost for the night in other locations even once they've started their nest? Or does her presence mean they haven't yet started their nest? Just curious...

Nara


Hi Nara,

Great to hear from you.

Isolde and Norman are likely working on their nest but once there are eggs Isolde will be on the nest for the night for months to come. First incubating the eggs and then brooding the eyasses. She usually won't roost elsewhere until all the young ones have fledged. Then she and Norman will roost in spots where they can keep an eye on their youngsters.
D


And from Jules Corkery, chief watcher of the Triborough Bridge hawks--

Hi All!
Atlas and Athena seem to have chosen a nest site for 2010. The site
is very close to the 2007 nest which is on the south side of the
bridge behind the tennis courts. It's about 20 feet over and slightly
higher than the old nest. It's underneath the roadway and is on a set
of 3 black pipes (there are large road signs on that section of the
bridge so these pipes might be for electricity to those signs? just a
theory). Atlas and Athena attempted to build their last year and then
moved to the north side of the bridge. The sticks they had laid there
last year are still there so they're building. Robert saw Athena
jumping up and down on it today

Jules

And a tidbit from Jeff Kollbrunner, chief watcher of Mama and Papa in Queens. Mama and Papa are notorious for switching nests sites from year to year. It appears tht they have given up tree nesting for the moment and have moved back to working on a building nest for this season.



And lest we get too Red-tailed Hawk glutted, (Is that even possible?), from NYBG contributor Pat Gonzalez--

Friends:

Here's some amazing footage of Great-horned owls.

http://www.youtube.com/watch?v=15x4twkEVak&feature=related

Pat

Donegal Browne