Apr 26 2017

On The Matter Of Names

Published by under Peregrines

Peregrine family at the Gulf Tower, 25 April 2017 (photo from the National Aviary falconcam)

Peregrine family at the Gulf Tower, 25 April 2017 (photo from the National Aviary falconcam)

>–> This morning’s status at the Cathedral of Learning nest is in the text below.

Wondering about names for Pittsburgh’s peregrine nestlings?  They already have them.

At Pittsburgh’s on-camera sites we use a naming scheme similar to that used at bald eagle nests: a letter for the location plus the hatch number.  The Cathedral of Learning is “C,” the Gulf Tower/Downtown is “G.”

Nestling names at the Cathedral of Learning were C1 through C4 last year.  Only C1 survived.  This year the numbers are C5 through C8.  Their status this morning is:

  • C5 is gone. Hope killed and ate it on 24 April.
  • C6 hatched in the early hours of 25 April.
  • C7 hatched late on 25 April.
  • The last egg, C8, is still unhatched as of now (26 April 2017, 7am).

The two chicks at the Cathedral of Learning, C6 and C7, were fed this morning at 6:25am shortly after this snapshot.

Two nestlings at Pitt, (C6, C7),26 April, 6:15am (photo from the Naritonal Aviary falconcam at Univ of Pittsburgh)

Two nestlings at Cathedral of Learning, 26 April, 6:15am (photo from the National Aviary falconcam at Univ of Pittsburgh)

At the Gulf Tower we’ve just begun naming this year so the three chicks are G1 through G3.

Good luck figuring out who is who!

Peregrine chicks look alike for several weeks because the entire clutch hatched within 24-48 hours. Only as the chicks approach fledging do the females become noticeably larger that the males. (Adult males are 1/3 smaller than females.  That’s why males are called tiercels.)

For more information on naming, see this Peregrine FAQ:  How do peregrines get their names?

Reminder!  A Caution to Viewers of the Cathedral of Learning falconcam:

Do not watch the Cathedral of Learning falconcam if it upsets you to see a mother kill her young.  The Gulf Tower in downtown Pittsburgh has a beautiful peregrine family on camera.  Please watch the Gulf Tower falconcam to learn about normal peregrine behavior!

 

(photos from the National Aviary falconcams at Gulf Tower and Cathedral of Learning)

6 responses so far

Apr 25 2017

One Killed, One Spared

Hope picks up her first-hatching egg. Latr she kills and eats it (photo from the National Aviary falconcam at Univ of Pittsburgh)

Hope picks up her first-hatching egg, 24 Apr 2017, 6:15pm. Later she kills and eats it (photo from the National Aviary falconcam at Univ of Pittsburgh)

I recently cautioned viewers about watching the Cathedral of Learning falconcam because the female peregrine killed and ate some of her young last year as they hatched.  I didn’t know if she would repeat this behavior. Last evening she did.

The first sign that Hope would kill the hatchling was around 6:15pm when she picked up and carried the hatching egg (above).  Carrying is not normal.  Half an hour later she killed and ate the chick and its eggshell.

Hope and her behavior were new to us last year.  We didn’t know if she killed and ate some of her young because she was under many stresses:  a new home at the Cathedral of Learning + loss of her mate + finding a new mate + other females challenging her while she was incubating the eggs.

This year none of those stresses apply.  None of them.  And yet Hope killed and ate her first hatchling last evening.

Last year one chick survived.  This morning it appears that Hope has spared the second chick.

Hope with her second chick, 25 April 2017, 6:14am (photo from the National Aviary falconcam at Univ of Pittsburgh)

Hope with her second chick, 25 April 2017, 6:14am (photo from the National Aviary falconcam at Univ of Pittsburgh)

Here’s a snapshot showing there are no longer four eggs/chicks.  Now there are only three.

Only 3: 1 chick, 2 eggs, 25 Apr 2017 (photo from the National Aviary falconcam at Univ of Pittsburgh)

Only 3: 1 chick, 2 eggs, 25 Apr 2017 (photo from the National Aviary falconcam at Univ of Pittsburgh)

But the chicks and eggs aren’t safe yet.  The remaining two eggs might succumb and last year when a second chick hatched successfully, it died within a week.  It failed to thrive.  Some speculated that Hope starved it.

We don’t know why Hope does this but we now know it’s not a one-time event.  She may have done this all her adult life but there was no camera at her former nest site, the Tarentum Bridge, where she fledged 0-to-2 young per year.

What’s next?

A Caution to Viewers:

Again, do not watch the Cathedral of Learning falconcam if it upsets you to see a mother kill her young.  The Gulf Tower in downtown Pittsburgh has a beautiful peregrine family with three chicks.  Please watch the Gulf Tower falconcam to learn about normal peregrine behavior!

A Caution to Commenters:

Though this situation resembles reality TV in which viewers can vote someone on or off the island, it is not a “voting” situation.  If commenters become worked up and demand/request action in emails or phone calls to “those in charge” it will end the show.  Literally.  It will shut down the camera.  That’s what happened when commenters went over the top at the Woods Hole Osprey-cam.

Normally I do not edit readers’ comments but this situation is not normal.  If you post a comment that could inflame others, I will edit it or delete it.

Though I am not watching Hope closely (I don’t want see her kill her young), I do want the camera to stay up.

 

(photos from the National Aviary falconcam at Univ of Pittsburgh)

P.S. on the subject of names:  At the Cathedral of Learning we use “C + Hatch Number” as the naming scheme for chicks.  Last year had 4 chicks (C1 through C4) but only C1 survived.  This year C5 was eaten, C6 is the now live chick.  I will write more about names in the days ahead.

 

 

75 responses so far

Apr 24 2017

Reminder: Schenley Park Outing, April 30, 8am

Baltimore oriole (photo by Steve Gosser)

Just a reminder that I’m leading a bird & nature walk in Schenley Park on Sunday, April 30, 8a – 10a.  (Note the early start! 8:00am)

Meet at Bartlett Shelter on Bartlett Street near Panther Hollow Road for this joint outing with the Three Rivers Birding Club.

New birds come to town every day at the end of April so there will be plenty to see.  Dress for the weather and wear comfortable walking shoes.  Don’t forget your binoculars!

Click here for more information and in case of cancellation.

 

p.s. I’ve already seen a Baltimore oriole in the park.  🙂

(Baltimore oriole photo by Steve Gosser)

No responses yet

Apr 24 2017

Three Chicks at Gulf, A Pip at Pitt

Louie, Dori and three chicks, 23 Apr 2017 (photo from the National Aviary falconcam at Gulf Tower)

Louie, Dori and three chicks, 23 Apr 2017 (photo from the National Aviary falconcam at Gulf Tower)

Yesterday we had good brief views of the three peregrine nestlings at the Gulf Tower.  By now we’re certain that the last two eggs won’t hatch.

The fourth egg pipped on Friday April 21 but the chick did not live to emerge from its shell. Dori tried to help it along, as seen in this videomark, but that was not enough.

You can see the crack in egg #4 in this pre-dawn photo from April 23 as Dori and Louie examine the egg.

Dori and Louie look at the incomplete hatch of egg #4, 23 Apr 2017 (photo from the National Aviary falconcam at Gulf Tower)

Louie and Dori look at the incomplete hatch of egg #4, 23 Apr 2017 (photo from the National Aviary falconcam at Gulf Tower)

When the adults allow a look, the crack is obvious in daylight.

Cracked egg #4 is obvious in this photo, 23 Apr 2017 (photo from the National Aviary falconcam at Gulf Tower)

Cracked egg #4 is obvious as Louie settles over the chicks, 23 Apr 2017 (photo from the National Aviary falconcam at Gulf Tower)

Eventually Dori and Louie will move both unhatched eggs away from the chicks.

 

Meanwhile at Pitt, when I first published this article I couldn’t see any pips in the eggs during the 7:09am nest exchange.  But …

Four eggs at Pitt, 24 April 2017, 7:09am (photo from the National Aviary snapshot cam at Cathedral of Learning)

Four eggs at Pitt, 24 April 2017, 7:09am (photo from the National Aviary snapshot cam at Cathedral of Learning)

Some viewers caught a quick glimpse at a pip at 7:25am.  And at 8:10am Shannon Platt captured this photo of Terzo turning the eggs.  Hatching has begun.

Terzo turns the eggs, revealing a pip, 24 Apr 2017 (photo from the National Aviary falconcam at Univ of Pittsburgh)

Terzo turns the eggs, revealing a pip, 24 Apr 2017 (photo from the National Aviary falconcam at Univ of Pittsburgh)

 

As I said before, we don’t know if Hope will kill some of her young when they hatch — as she did last year — but keep this Caution in mind:  Don’t watch the eggs hatch at the Cathedral of Learning if it upsets you to see that behavior.

 

(photos from the National Aviary falconcams at Gulf Tower and Cathedral of Learning)

 

27 responses so far

Apr 23 2017

Not A Bumblebee

Published by under Insects, Fish, Frogs

Carpenter bee (photo by Chuck Tague)

Carpenter bee (photo by Chuck Tague)

Have you seen bumblebees hovering and dancing near a wooden structure lately?  They look like bumblebees but they’re not.  They’re carpenter bees.

Carpenter bees are easy to identify once you know this trait:  They have shiny black abdomens, noticeable in flight.

Carpenter bee in flight.Notice the shiny abdomen (photo from Wikimedia Commons)

Carpenter bee in flight. Notice the shiny abdomen (photo from Wikimedia Commons)

Here’s a side-by-side comparison (not to scale) — carpenter bee on the left, bumblebee on the right.  Notice the shiny abdomen on the carpenter bee and hairy abdomen on the bumblebee.

Carpenter bee vs bumblebee (photos by Chuck Tague)

Carpenter bee vs bumblebee (photos by Chuck Tague)

Bumblebees build their nests in the ground.  Carpenter bees, as their name implies, build their nests in wood. In April you’ll see them face wooden structures, hovering and zooming.

If you see carpenter bees near your house should you worry?  I don’t.

Carpenter bees don’t eat the wood and they are barely social.  A few females may nest together but that’s the extent of it.  Their nests are not large colonies and they don’t have a queen.  The entire older generation dies off just before the new young fly so there’s little overlap.

A few carpenter bees have nested somewhere at the front of my 110-year-old house every April for at least a decade.  They never become an “infestation.”

Carpenter bees have a long foraging season and are good pollinators. All flying insects are suffering declines, especially honeybees and bumblebees, so we need every pollinator we can get.

I leave the carpenter bees unharmed and watch with wonder.

 

(photos of stationary bees by Chuck Tague. photo of flying carpenter bee from Wikimedia Commons; click on the image to see the original)

10 responses so far

Apr 22 2017

Tiny Hairs

Published by under Plants

Purple dead nettle (photo by Kate St. John)

Purple dead nettle (photo by Kate St. John)

Purple dead nettle (Lamium purpureum) has been blooming in southwestern Pennsylvania since early spring.

This Eurasian member of the Mint family attracts attention because it often grows in dense colonies where the plants stand together in reddish purple stacks of leaves and flowers. Some patches stand eight inches tall.

All the Mints have bilaterally symmetrical(*) flowers but the shape of this one makes the plant easy to identify — a pinkish purple hood with a unique two-lipped landing pad for bees.

Closeup of purple dead nettle flower (photo by Kate St. John)

Closeup of purple dead nettle flower (photo by Kate St. John)

Until I snapped a closeup in good light I had never seen the hairs that give it the nettle name.  Reminiscent of stinging nettle the hairs don’t sting; they’re “dead.”  Notice that the flowers have tiny hairs, too.

Purple dead nettle has a long blooming period so we’ll see it flowering until next winter.  Look for the plants now, though, because their best display occurs this month.

 

(photos by Kate St. John)

(*) “Bilaterally symmetrical” means it matches side-to-side, like our faces. A harder word for the same concept among flowers is zygomorphic.

No responses yet

Apr 21 2017

Throwing His Head

Hooded mergansers are headed for the woods where the females will nest alone in hollow trees.  On the way they’re choosing mates.

What features are the ladies looking for?

Based on the video above, I’ll bet they’re impressed by the biggest white hood.

Most of these birds have moved north of our area but a few breed in Butler, Crawford and Erie counties.

If you see a pair cruising together, wait to see if he throws his head.

 

(video by Alex Galt on YouTube)

One response so far

Apr 20 2017

Meanwhile, A Caution Across Town

Dori with her first chick at the Gulf Tower, 19 April 2017, 3:27pm (snapshot from the National Aviary falconcam)

Dori with her first chick at the Gulf Tower, 19 April 2017, 3:27pm (snapshot from the National Aviary falconcam)

Since yesterday we’ve been having a joyous time as we watch five peregrine eggs hatch at the Gulf Tower (shown above).  Dori and Louie are excellent parents who’ve raised 27 young in Downtown Pittsburgh. We’re looking forward to a happy healthy season at this nest.

Meanwhile across town, the Cathedral of Learning peregrine eggs are due to hatch soon … but you might not want to watch.

4 eggs at the Cathedral of Learning, 19 April 2017 (snapshot from the National Aviary falconcam)

4 eggs at the Cathedral of Learning, 19 April 2017 (snapshot from the National Aviary falconcam)

Hope and Terzo’s eggs are due to hatch this Sunday April 23 (give or take a day or two) but Hope shocked us last year by killing and eating two of her four chicks as they hatched.  This type of behavior is very rare and upsets nearly everyone who sees it.

We don’t know if Hope will repeat the behavior this year but my word to the wise is this:

Caution!  Don’t watch the eggs hatch at the Cathedral of Learning if it upsets you to see a mother kill her young.  Again, we don’t know if Hope will do this, but she might.

 

 


p.s.  Yesterday some of you were confused between the Gulf Tower and Cathedral of Learning nests.  Here’s an easy way to tell the difference.

The Gulf Tower camera view always has a window ledge on the right side of the image (see yellow area).

Comparison camera view at Gulf. Notice the window ledge on the right.

Comparison camera view at Gulf. Notice the window ledge on the right.

 

The Cathedral of Learning camera view always has a green perch at the bottom right.

Cathedral of Learning nest view. Notice the green perch at the bottom right corner.

Cathedral of Learning nest view. Notice the green perch at the bottom right corner.

 

(snapshots for the National Aviary falconcams at Gulf Tower and University of Pittsburgh)

14 responses so far

Apr 19 2017

We Have a Pip at the Gulf Tower

Dori at the Gulf Tower peregrine nest showing an egg with a pip (photo from the National Aviary falconcam)

Dori at the Gulf Tower peregrine nest showing an egg with a pip (photo from the National Aviary falconcam)

At 7:17am this morning, 19 April 2017, Dori turned the eggs at the Gulf Tower peregrine nest and revealed a pip in one of them.

Watch for Dori and Louie’s eggs to hatch in the next 24 to 48 hours at the National Aviary falconcam at the Gulf Tower.

 

(snapshot from the National Aviary falconcam at Gulf Tower)

p.s. Don’t confuse this mother peregrine at the Gulf Tower with Hope at the Cathedral of Learning nest.  Dori is an excellent mother and has never killed her young. Hope, the female peregrine at Pitt, killed and ate two of her chicks last year.

p.p.s. First hatch at 9:08a (approximately).

32 responses so far

Apr 18 2017

A Busy Week For Trees

Sugar maple flowers, 15 April 2017, Schenley Park (photo by Kate St. John)

Sugar maple flowers (wind pollinated), 15 April 2017, Schenley Park (photo by Kate St. John)

Are you sneezing yet?

It’s a busy week for trees in southwestern Pennsylvania as they open flowers and unfurl new leaves.

Redbud flowers fully open, 15 April 2017 (photo by Kate St. John)

Redbud flowers fully open (insect pollinated), 15 April 2017 (photo by Kate St. John)

 

In Schenley Park the trees are flowering everywhere, from insect pollinated redbuds (pink above) to wind pollinated sugar maples (yellow at top) and hophornbeams (below).

Hophornbeam catkins, 15 April 2017 (photo by Kate St. John)

Hophornbeam catkins (wind pollinated) 15 April 2017 (photo by Kate St. John)

 

Last weekend it was so dry that pollen coated my car and made my throat and eyes itch … and this was before the oaks had bloomed!  (Pollen note: Both oaks and pines are wind pollinated. Southwestern PA has an oak-hickory forest with few pines.)

Other busy trees include the bursting buds of hawthorns and hickories.  …

Hawthorn buds bursting, 15 April 2017 (photo by Kate St. John)

Hawthorn buds bursting, 15 April 2017 (photo by Kate St. John)

Bitternut hickory bud is opening, 15 April 2017 (photo by Kate St. John)

Bitternut hickory bud is opening, 15 April 2017 (photo by Kate St. John)

… and new leaves on Ohio buckeyes.

Ohio buckeye shows off its leaves, 15 April 2017, Schenley Park (photo by Kate St. John)

Ohio buckeye shows off its leaves, 15 April 2017, Schenley Park (photo by Kate St. John)

 

The city is a heat island so Schenley Park’s trees are ahead of the surrounding area.  Our red oak buds burst yesterday so you can expect several busy weeks ahead for trees in southwestern Pennsylvania.

Are you sneezing yet?

 

(photos by Kate St. John)

3 responses so far

Next »