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Other Nature Related Information => Falcon Web Cams => Topic started by: Annette on 26-Feb-10, 02:29:59 PM



Title: Falcon cam San Francisco
Post by: Annette on 26-Feb-10, 02:29:59 PM
Hi,

the peregrines in San Francisco have they first egg!  :mbanana:

http://www2.ucsc.edu/scpbrg/falconcamera.htm (http://www2.ucsc.edu/scpbrg/falconcamera.htm)




Greetings
Annette


Title: Re: Falcon cam San Francisco
Post by: Donna on 26-Feb-10, 03:05:51 PM
Hi,

the peregrines in San Francisco have they first egg!  :mbanana:

http://www2.ucsc.edu/scpbrg/falconcamera.htm (http://www2.ucsc.edu/scpbrg/falconcamera.htm)




Greetings
Annette

Wow, this is early!


Title: Re: Falcon cam San Francisco
Post by: Carol P. on 26-Feb-10, 07:08:19 PM
This seems really early.  Anyone know when these Peregrines usually lay their eggs?


Title: Re: Falcon cam San Francisco
Post by: gayle on 26-Feb-10, 09:36:53 PM
This seems really early.  Anyone know when these Peregrines usually lay their eggs?

On the PG&E building in downtown San Francisco at 77 Beale St.  The falcons are Dapper Dan and Diamond Lil.  This is the same location formerly used by George and Gracie.  The first egg was laid last year on March 8.

Gayle


Title: Re: Falcon cam San Francisco
Post by: AlisonL on 26-Feb-10, 09:52:38 PM
It's good to see Diamond Lil and Dapper Dan with their first egg. Hoping for a good year for them.

      


Title: Re: Falcon cam San Francisco
Post by: Annette on 07-Mar-10, 01:22:03 PM
Diamand Lil and Dapper Dan have now four eggs.


Title: Re: Falcon cam San Francisco
Post by: carly on 13-Feb-13, 11:04:54 AM
First Egg for 2013!!  As per mwplay over at BCAW!

Dan and Lil first again  :notworthy: :notworthy:



Title: Re: Falcon cam San Francisco: First Egg for 2013
Post by: Falconatic1 on 13-Feb-13, 11:22:01 AM
Welcome to the first egg in San Francisco, to parents Diamond Lil and Dapper Dan.

I checked my files, and last year Lil laid their first egg on 2.19.12, and in 2011 it was 2.24.11, so we are definitely getting earlier and earlier.

There has been a lot of courtship, bonding and mating activity at the San Jose nest box as well, so we are all on pins and needles about when that first egg might appear!

Debbie


Title: Re: Falcon cam San Francisco
Post by: MAK on 13-Feb-13, 12:28:17 PM
Woohoo let the falcon season begin!  :2thumbsup:


Title: Re: Falcon cam San Francisco: First Egg for 2013
Post by: Donna on 13-Feb-13, 12:36:50 PM
Welcome to the first egg in San Francisco, to parents Diamond Lil and Dapper Dan.

I checked my files, and last year Lil laid their first egg on 2.19.12, and in 2011 it was 2.24.11, so we are definitely getting earlier and earlier.

There has been a lot of courtship, bonding and mating activity at the San Jose nest box as well, so we are all on pins and needles about when that first egg might appear!

Debbie

Gee that's real early, our guys aren't even back from migration yet!  :stupid:   CONGRATS!!!!


Title: Re: Falcon cam San Francisco
Post by: Donna on 13-Feb-13, 05:07:27 PM
1st egg!  :clap:  Posted by Maryann Reid on BCAW


Title: Re: Falcon cam San Francisco
Post by: Donna on 20-Feb-13, 02:27:07 PM
  3 eggs now!!  :heart: :heart: :heart:


Title: Re: Falcon cam San Francisco
Post by: MAK on 20-Feb-13, 05:43:53 PM
 :thumbsup: :thumbsup: :thumbsup:


Title: Re: Falcon cam San Francisco
Post by: carly on 11-Mar-13, 01:35:48 PM
Looks like we've lost a parent here, been some fighting going on the past few days and lots of confusion but a new unbanded falcon just entered the scrape.  I can't for sure sure who is lost Lil or Dan as they're still trying to figure it out but leaning towards Lil which means the eggs will likely be lost  :crying: :crying:

Details here:

http://www.peregrinefalcon-bcaw.net/viewtopic.php?f=331&t=1500&start=720 (http://www.peregrinefalcon-bcaw.net/viewtopic.php?f=331&t=1500&start=720)


Title: Re: Falcon cam San Francisco
Post by: Kris G. on 11-Mar-13, 01:48:42 PM
Looks like we've lost a parent here, been some fighting going on the past few days and lots of confusion but a new unbanded falcon just entered the scrape.  I can't for sure sure who is lost Lil or Dan as they're still trying to figure it out but leaning towards Lil which means the eggs will likely be lost  :crying: :crying:

Details here:

http://www.peregrinefalcon-bcaw.net/viewtopic.php?f=331&t=1500&start=720 (http://www.peregrinefalcon-bcaw.net/viewtopic.php?f=331&t=1500&start=720)

I hadn't read the news there today but saw that there's been problems the past few days. That's so sad...


Title: Re: Falcon cam San Francisco
Post by: MAK on 11-Mar-13, 02:48:24 PM
Oh man, that's a real tragedy!  :(


Title: Re: Falcon cam San Francisco
Post by: Dumpsterkitty on 11-Mar-13, 02:56:19 PM
At least it's early enough for a new clutch if the new female doesn't take over these eggs.


Title: Re: Falcon cam San Francisco
Post by: Dumpsterkitty on 31-Mar-13, 05:12:33 PM
It looks like the new female-they're calling her Cher-has laid her first egg. Diamond Lil's 3 eggs are still there. Looks like they'll have an "Orion" clutch, though she may lay and hatch more.


Title: Re: Falcon cam San Francisco
Post by: Kris G. on 09-Jun-13, 10:59:50 PM


New post on stewartfalcon

“Overlong” Incubation at SF PG&E Nest
by stewartfalcon

It is about one week past the 100 day mark for incubation of now-dead eggs by the male known as Dapper Dan at the downtown San Francisco peregrine nest on PG&E headquarters. As many know, Dan and Lil produced a clutch of eggs that were incubated to about half term when a new female invaded the territory and displaced Lil.

Dan continued incubation duties alone. But of course he had to eat. He left to hunt and the eggs went uncovered for extended periods almost every day. Camera watchers waited and hoped for the new female to assume incubation of the eggs that were not hers but to her, they were just obstructions to her own clutch. Once her first egg arrived her drive to incubate became strong and both adults kept the growing clutch (six in all) covered for a full term (33 additional days) but even the properly incubated eggs did not hatch and now it is just a nest watch while we all wait for the newly formed pair to give up for the year. The new female's eggs must not have been fertile.

I receive emails from people who plead with me to "help" the birds by saving them from further incubation duties. I ask: What if I trigger them to lay yet another clutch? What about other peregrines incubating non-viable eggs in other nests where there is no nest camera? It is one of the dilemmas of publishing a nest camera: it is not the Disney Channel and there will not necessarily be a happy ending. No medicare, no social security, no soup kitchen... But c'mon, why can't we DO something?

Permits to fiddle around with nature are carefully scrutinized. I have a permit to visit nests, band nestlings, and collect addled eggs (for study of contaminent analysis) but I do not have a permit that allows removal of eggs from sitting peregrines.

I watched two pairs of peregrines incubate for similar "overlong" periods last year. I just gave up on one pair and went to the nest to investigate at the other when the pair finally gave up. I found one egg that had recently rotted and broken open due to the build up of gas. I think the stink drove the birds away.

During the population recovery work we believed that peregrines had an internal clock that told them when they reached full term incubation. That belief drove field biologists to return to nests with live young to replace dummy eggs very close to the end of the 33 day incubation period. Perhaps we had much more time?

As the Bay Area peregrine population continues to swell it is likely that we will see more nest territory intruders--more resident pairs being challenged by breeding age adult who want a territory. Territorial intrusion could actually dampen overall productivity through events such as we observed this season in San Francisco. Indeed, it may be one of nature's mechanisms for limiting population to a level that habitat can support (its carrying capacity) and assuring that the strongest members of the population are breeding.




Title: Re: Falcon cam San Francisco
Post by: Donna on 09-Jun-13, 11:20:29 PM
 :(  How sad for them!! Hope they have better luck next time.


Title: Re: Falcon cam San Francisco
Post by: Kris G. on 28-Jun-13, 06:16:23 PM
On the 128th day of incubation by Dapper Dan, the eggs are removed:

http://stewartfalcon.wordpress.com/2013/06/28/san-francisco-pacific-gas-and-electric-company-nest-2013/ (http://stewartfalcon.wordpress.com/2013/06/28/san-francisco-pacific-gas-and-electric-company-nest-2013/)

http://www.youtube.com/watch?v=hhs5-TTMPPc# (http://www.youtube.com/watch?v=hhs5-TTMPPc#)



Title: Re: Falcon cam San Francisco
Post by: Donna on 28-Jun-13, 06:24:57 PM
That's the saddest thing ever!!  :crying:  That poor boy!!


Title: Re: Falcon cam San Francisco
Post by: Kris G. on 28-Jun-13, 06:33:54 PM
That's the saddest thing ever!!  :crying:  That poor boy!!

And his new mate, Cher, incubated for 87 days.  :(


Title: Re: Falcon cam San Francisco
Post by: MAK on 28-Jun-13, 10:57:25 PM
 :(