Shallow Thoughts : : nature
Akkana's Musings on Open Source Computing, Science, and Nature.
Sun, 31 Mar 2013
Happy Easter! In keeping with the season, here's a dinosaur egg I
spotted on a recent hike.
Okay, or maybe it's just a vaguely egg-shaped rock. But there's been a lot
going on this spring now that the weather is turning.
First, we seem to have Eurasian collared doves nesting somewhere near
our house. There's a dove up on the power pole, cooing, most of the day.
I know I've heard lots of reports of collared doves around the south bay
in past years, particularly down around Morgan Hill, but this is the first
time I'd seen more than a glimpse of them here at home in San Jose.
It's fun to see new species, though I hope these European interlopers
don't push out the native mourning doves entirely.
In addition, the wildflowers have been great out on the trails, especially
around the south end of Windy Hill OSP and Coal Mine Ridge. A hike up
there last week revealed nearly every wildflower on my
wildflower page
that could be in flower now -- California poppy, wild cucumber
(intriguingly also called manroot), giant trillium, hound's tongue,
milkmaids, the most impressive profusion of Indian warrior I've seen,
blue larkspur, miner's lettuce, Sierra suncup,
vetch (it's pretty despite the unfortunate name), red maid,
wild radish, wood sorrel, broom, and my favorite, shooting star.
Dave had to keep waiting for me while I argued with the camera
over macro focus distances. So if you like wildflowers, get out there
and take a look!
Tags: nature, birds, wildflowers
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16:22 Mar 31, 2013
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Wed, 16 Jan 2013
The weather was a bit warmer today than it has been, so I snuck off
for an hour's hike at Arastradero, where I was amazed by all the
western bluebirds out enjoying the sunny day. I counted three of
them just on the path from the parking lot to the road crossing.
Bold, too -- they let me get close enough to snap a shot with my
pocket camera.
Farther up the trail, a white-shouldered kite was calling as it
soared, and a large falcon flew by, too far away and too backlit
for me to identify it for sure as a peregrine.
But then I spotted an even more unusual beast -- a phantom horse
rearing out of the ground, ears pricked forward, eyes and mouth open
and mane whipped by a wind we could not feel on this pleasant, windless day.
Dave always teases me about my arboronecrophotography inclinations
(I like to take pictures of dead trees).
But how could I resist trying to capture a creature like this?
Tags: nature, birds, photo
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19:26 Jan 16, 2013
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Sat, 07 Jul 2012
On a brief and visit to San Luis Obispo, an unexpected bonus
was the unusual wildlife about town.
We walked from our hotel on Monterey St. to downtown to stretch our
legs, explore the mission and river walk and then get dinner.
(Mo's Smokehouse has excellent barbecue.)
On the way back, I noticed a small figure in the gutter just below
the curb, scratching and nosing around in the litter there.
It was the size and shape of a chipmunk, but its coloration showed
it to be a California ground squirrel -- a baby, probably on one of
its first forays out of the burrow.
Burrow? Well, as I pulled my camera out of a pocket, suddenly the
youngster vanished. I stepped into the street to see where it had
gone -- and discovered that SLO has gutter drain holes in their concrete
curbs that are exactly the size and shape of a typical ground
squirrel's burrow entryway.
The size of these tiny ground squirrels was especially amazing because
just a few miles northwest, at Morro Rock, we'd encountered the most
humungous, gihugicle California ground squirrels known to man -- animals
so swollen from tourist handouts that at first I took them for prairie dogs.
(I wasn't able to photograph the tiny and quick SLO squirrels, but
the sluggish Morro Rock squirrels were a much easier target ... as you see.)
Back in SLO, we walked on, marvelling at the little squirrel -- and
half a block later, another squirreling
the same size as the other one dashed out from under a car, ran to the
curb and disappeared. Yep -- another of those round gutter holes.
They must have a whole colony of these cuties!
Then just a few blocks later, I noticed motion out of the corner of my eye
... and turned in time to watch a pair of scarlet macaws fly across
the street, up an adjacent street and into a tree.
I read an article once from a biologist who visited South America and
thrilled to the sight of these huge, bright red, long-tailed parrots
flying free ... but I never expected to see the same thing on the
street of a California city.
Tags: nature, travel
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12:42 Jul 07, 2012
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Fri, 29 Jun 2012
A short hike today to Lake Ranch above Los Gatos gave us nice views
of three killdeer, a duck family with six ducklings, a hunting egret
and a host of other birds. But on the way back, we met an unusual
little fellow on the trail.
It was a young alligator lizard, one of the smallest I've seen -- which
is still fairly sizeable for a lizard, maybe eight or ten inches long
including the long slim tail.
In typical alligator lizard fashion,
it was lying motionless on the trail. So in typical Dave and Akkana
fashion, we whipped out our cameras and switched into macro mode.
Alligator lizards are normally very placid. It's hard to get them to
move under any circumstances, as long as you don't touch them.
You can shoot photos from all angles,
get the camera right up where you have to shoot a panorama to get the
whole tail in, move around to the other side and get a different angle,
and the lizard won't move.
Imagine our surprise, then, when the little one opened its mouth and
started threatening us!
Dave pulled back his camera (it's his a new toy, so I was letting him
shoot the up-close macros while I stayed what I thought was a
comfortable foot away) and the beast turned on me and started
advancing, mouth still open. I snapped a few shots while pulling back
slowly. Then he made a rush for me.
I pulled my camera, and fingers, up out of his reach -- supposedly
alligator lizards can bite, though it's hard to see any evidence of
teeth in the photos -- and he rushed my shoes. I lifted the foot he
was headed for, and he darted under my shoe, turned on a dime and
skittered toward Dave's hiking shoe. But I guess when he got there he
didn't find it quite as vulnerable as he'd hoped, so he turned again
and ran off toward the side of the trail, leaving us stunned -- and
doubled over with laughter.
I actually tried to shoot a video of his advance, but once he rushed
me I was too busy getting out of his way and missed most of the action.
Evidently I'm not quite ready to shoot those National Geo documentaries.
That's a bit of dry leaf on his forehead, in case you're wondering.
Here's what Dave was doing that got the little lizard annoyed.
The adult alligator lizards we see don't mind that a bit ... honest!
Tags: nature, reptiles, lizards
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21:01 Jun 29, 2012
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Sat, 22 Oct 2011
While we were having dinner, one of the local squirrels came by to look
for her own dinner under the cedar in the front yard, just outside the
window by our dining table.
I remember, when I was young, reading somewhere that squirrels
remember where they bury each nut, so they can return and dig it up
later. Whoever wrote that clearly never spent much time watching
actual squirrels.
I've also read, more recently and in more reputable places, that
squirrels find buried nuts by seeking out likely burial spots then using
their sensitive noses to find the underground nuts.
If so, the sensitive nose thing is overrated. It's actually quite a
bit more work than that description makes it sound.
If you're ever hungry and wanting to dig up a snack from underground,
here's the tried and true, time tested squirrel technique:
Hop over to a place that looks likely.
Bury your nose in the ground, and plow a furrow with said nose
for a few inches.
No nut? Pull your nose out of the ground, hope over to another location
that looks appealing (not one right next to where you just were --
do not by any means use any kind of exhaustive quartering technique),
bury your nose in the ground and repeat.
Every fifth or sixth time, it's permissable to sit up and brush dirt
off your nose before going back to the hunt.
After about twenty minutes of this, our visitor finally did
find something. She triumphantly sat up, brushed herself off, turned
the prize around in her mouth for a while, then ran over to the cedar
to hang upside down for dinner.
Curiously, what she found looked like a live oak acorn -- not
something that's very common here in the suburbs. (Our yard sports
a red oak, but it has tiny acorns which don't interest the squirrels
in the slightest.)
She took five minutes to eat her prize, then returned to the hunt for
another forty minutes. If she found anything else during that time,
I didn't see it, though she might have found something while she was
on the other side of the tree.
Note that I didn't say this was an efficient technique ...
only that it was time tested.
Tags: nature, squirrels
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18:07 Oct 22, 2011
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Sun, 21 Aug 2011
A recent short hike at Sanborn was unexpectedly productive for
creepy-crawlies.
At the lower pond, we looked for California newts. There were lots of
newts last week a few miles away at Montebello, so we thought we'd see
some at Sanborn too. But there weren't many adult newts in the pond --
we could only find three. That pond has never recovered from its
draining
three years ago, which seems to have killed all the fish and crayfish
and driven away most of the newts.
But we did see one very interesting sight: a large underwater bug, at
least 2 inches long. It first caught our attention jetting through the
water to the shallows near where we stood, where it sank to the bottom
and rested for a while (posing for pictures!) It moved only slightly
during the couple of minutes we watched it ... then it suddenly
jetted off toward another part of the pond. I say "jetted" because
it didn't move its legs or proto-wings at all; it moved like a torpedo,
presumably propelled by a jet of water.
Upon returning home, at tip from a friend (thanks, Wolf!) I looked up
dragonfly nymphs. Indeed, that's what this was. Much more massive than
an adult dragonfly, these larvae apparently live underwater for
several years, eating bugs, fish and small amphibians, until they're
finally ready to metamorphose into the beautiful winged adults we're
familiar with.
An interesting creature, and one I'd never seen before.
The small upper pond, unlike the lower one, was full of life.
Small fish up to about an inch and a half schooled in the shallows.
Some larger koi lurked near the reeds.
But I spotted something that clearly wasn't a fish: yes, there's still
at least one larval newt left in the pond. It obligingly lounged in a
sunny spot near the pond's edge so I could snap pictures capturing its
feathery gills as well as four tiny feet.
We also stopped by the scum pond at Walden West. No bullfrogs, no turtles.
The only life we saw there was a couple of female mallards, eagerly
vacuuming up the scum. That pond, with its surface completely covered
with algae, must be paradise for an algae-eating duck ... I wonder why
I don't see more of them there.
And as long as the subject is crawling animals,
I can't resist throwing in a snapshot of a garter snake I spotted
today at Huddart. Nothing especially rare or exotic, but a pretty
little thing nontheless.
Tags: nature
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18:39 Aug 21, 2011
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Thu, 18 Aug 2011
This past spring I planted an apple tree.
I expected it would be simple, even though I had a couple of
goals I wanted to meet. I prefer tart green apples -- no mealy
too-sweet red delicious types ... or worse, golden delicious.
And I was hoping to get something
that matured any time other than mid-October -- because that's when
the guava trees go crazy and we're inundated with fruit. So, go
to the nursery, find a green apple tree that matures at some other
time, buy it and plant it. Right?
Turns out apples are complicated. Some apple varieties are
triploid,
which has to do with how many chromosomes need to group together
to produce fruit. Diploid apple trees can produce fruit all by
themselves ("self pollinating"), while triploid varieties need another
apple tree nearby -- one that flowers at about the same time -- to
pollinate them.
In addition, apparently you can't just take a seed out of an apple you
ate and plant it. Well, you can, but it won't grow as well. Modern
apple trees take branches from varieties that make good fruit, and
graft them to rootstock from different, presumably hardier, varieties.
But as long as they're grafting anyway, that means it's just as easy
to make a tree that has branches of several different types. Cool!
And with any luck, they'll be types that can either pollinate each other,
if they don't self-pollinate.
After failing to locate any pippins or other non-granny green apples,
I ended up with a little tree with four branches: fuji, gala,
granny smith (we'll just have to compete with the guavas)
and ... golden delicious. Yes, it turns out that you can't buy
a multi-variety apple tree that doesn't include golden delicious.
My least favorite apple. I have no idea why they all include it.
Maybe it's an exceptionally good pollinator for
the varieties that actually taste good.
I planted the little tree, and amazingly, it flourished.
The nice man at God's Little Acre said
it would bear this year. I raised an eyebrow -- apples from a little tree
that only came up to my waist? (Readers who haven't met me, just take my
word that isn't very high.)
But a month or so after planting, the tree was a foot taller and
covered with flowers.
And a few weeks after that, there were three tiny apples growing:
a fuji, a granny and a golden. How exciting!
Exciting for a few weeks -- until
two of the three little grape-sized apples-to-be vanished. I
still don't know if some bird mistook them for a berry, or a
mischievous squirrel wanted something to bury. All I was left with was
-- doesn't it just figure! - the golden delicious, steadily growing
on its branch.
But wait. Apples all start out green, right? This one certainly was.
What if I picked it before it turned yellow?
Would that give me that early-maturing green apple I'd been hoping for?
Maybe golden delicious wasn't so bad after all.
I eagerly watched over the next month or two as my single apple
grew and matured. And last week, it finally started to change from a
deep pippin-like hue to a more yellowish green.
So I picked it. And ate it for breakfast. It was excellent:
tart and firm.
I hereby announce the invention of the "green delicious" apple
variety. I definitely recommend it. I'm looking forward to next year's
crop ... which I hope will be a bit larger than this year's.
Tags: garden
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18:54 Aug 18, 2011
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Mon, 01 Aug 2011
We went exploring around the upper Skyline-to-the-Sea trail yesterday.
The mysterious chlorine smell was very evident, for the first time
this year. Usually I've first noticed it in early July or even June,
but although we had some very hot weather in early June this year,
it wasn't enough to bring out the smell. I've made no progress in
identifying it, but I continue to
suspect
tanoaks as the chlorine culprit.
It was a good day for reptiles, too. We surprised the biggest
ring-necked snake I've ever seen -- well over two feet long and
thicker than my thumb (which admittedly isn't saying much).
It hastened off the trail before I could get the camera out.
Then back at home, I found a small young alligator lizard splayed
out in the shade on the sidewalk of our back yard. We've occasionally
had alligator lizards here before, but never such a small one.
Again, no picture; instead we just watched as it made its way across
the yard to hide under the rosemary. I hope it stays around.
Tags: chlorine, nature
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10:31 Aug 01, 2011
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