Last big monsoon event brought rain and a spadefoot to our Phoenix area yard. Tuesday night’s big monsoon event brought even more rain and a centipede.

This guy is a Scolopendra polymorphus, a Sonoran centipede, sometimes called a tiger centipede. This one is about 4 inches long (they can grow up to about 7 inches), and has crawled up the outside of our back door screen, possibly in search of prey, or maybe to escape flooding in the nearby soil, where it very likely dens up.

It’s a beautiful animal, although I have to admit I’m not partial to centi- or milli-pedes (it may be all the pointy little appendages) but as this one’s a neighbor, I’m trying to be inclusive. Apparently, I’m not the only one who has a hard time liking them. Our cat, Hector Halfsquid, spent the evening on the inside of the wet screendoor alternately approaching hesitantly and hurriedly backing away from the centipede, giving the impression of being simultaneously fascinated and repulsed by it.

(Photos A.Shock)

In fact, even today he’s still giving occasional neurotic “creepy hops” where from deep sleep he suddenly jumps out of his skin, apparently having received Gary-Larson-esque “cumulative willies” from the many-legged visitor. Hector’s wariness is probably justified, as these guys can deliver a powerful and venomous bite; not dangerous in most cases, but certainly painful.

Saturday night in our yard, a Couch’s spadefoot emerged after a substantial monsoon event, and used our swimming pool as his stage to advertise his availability to females, and sovereignty to other male spadefoots.  (See previous post.)

<< Spadefoot in the pool net, after exciting dawnzerlylight rescue orchestrated with dramatic Great horned owl background music (photo A.Shock).  Look at those eyes — better than dichroic glass!

Swimming pools are not terribly good for wildlife.  Wonky chemistry + steep sides = unfriendly locale.  At two in the morning, however, I was not able to fish out the wary spadefoot, who fled to the bottom every time I approached with the soft mesh pool skimmer to rescue him.  Eventually he swam right to the very deepest depths of the deep end, where even the long-handled skimmer pole could not not reach.

So, I assembled an impromptu spadefoot ramp.  Mr. Spadefootdude had been calling consistently from one spot at the edge tiles of the shallow end, so rustling up a four-foot one-by-ten and some bricks, I put the structure there in the hopes he’d return to his stage after I’d gone away, and climb out if he wished.

<<  Spadefoot ramp.  Like purpose-made cat toy, not used by spadefoot.

Sunday morning, I got up at dawn to check on his progress.  After the rain it was cool enough to shut down the AC and open doors and windows, so the Great horned owls duetting from the alley phone pole had awakened me anyway.  These were very late hours for them, as the sky was lightening, and the Brown crested flycatchers and Abert’s towhees were already up, brrting and chnking.  Sure enough, the spadefoot was still in the pool, strongly kicking along the bottom of the deepest part with its sturdy legs.

By now I was more awake (and more coordinated), so using both the pool brush and the skimmer, I managed to gather the spadefoot gently in the net and lift him up to the surface.  He paused for the photo portrait above, then competently took himself off hopping, to find a sheltered hiding spot for the day.

If you are wondering why the word “toad” doesn’t appear in these spadefoot posts, it’s because, toadly as they look, spadefoots are not true toads.  On the basis of structural differences, they have been assigned their own family, Pelobatidae, which means spadefoot in Greek.  More info here.

Coincidentally during that very spadefoot night I’d done a smoke firing, and in the bin were two batrachian images, frogs to be sure (prominent tympanum instead of parotoid gland), but still in the ballpark.

<<  Here’s one of the whistles, very Couchy. They’ll be offered at Southwest Wings Birding and Nature Festival in Sierra Vista next week (object and photo A.Shock).

I hope the spadefoot doesn’t make a return appearance on his watery stage tonight; I might not hear him again, if the windows are closed.  I guess that toadramp will be staying in place a little longer.  “wraaaaaaah”

…of finding a spadefoot in the yard!

A few minutes ago — just before one a.m. — I was awakened by a sound I haven’t heard in our yard or in our neighborhood for years: a loud bleating croak, with the slightly rising tone and resonance I can only describe as being like the noise a wet rubber boot would make slowly squelching against another wet rubber surface, like an inflatable raft.  “wraaaaaaah”   “wraaaaaaah”   “wraaaaaaah”  It was the advertising call of a male Couch’s spadefoot.

Couch’s spadefoot (Scaphiopus couchii, photo by A.Shock), having taken refuge at the very bottom of the pool, after I rudely interrupted his advertising song in the middle of the night by shining a flashlight on him, and looking at him.  >>

Our very own spadefoot!  This is exciting because, as I said, we haven’t had them in years.  I figured they were extirpated from around here, so when my friend Kathy, who has them, well… in spades in her north Scottsdale yard, offered me a mort o’ spadefootlets, I jumped at the chance.  I fed them up in a terrarium (a task made more difficult for being necessary during a nationwide retail cricket shortage) and released them in the yard.  After that, there hasn’t been a word from the spadefoots (spadefeet?).  Not a peep, not a croak, not a sighting, nothing.  Mind you, this release was two years ago, in September 2008.  (I blogged the event here.)  I figured they hadn’t “taken.”

Last summer’s monsoon was a pretty weak one in these parts; maybe the spadefeet didn’t get what they needed.  But this afternoon we had about six tenths of an inch of rain in just over half an hour.  The wash in the yard ran; I had to do some engineering to keep water out of the studio (at least from the ground up; water always comes into the studio from the top down).  Anyway, as much as we need the rain, and as cool and lovely as a windless monsoon event makes the desert air, I was not feeling fully friendly toward our wet weather.  Until it brought out a spadefoot!  I’m hoping there are others out there, females, with luck, and we can get a spadefoot thing goin’ on again in the joint.

(Now to get him out of the pool, which can’t be good for him, chemically; plus, he can’t get out by himself, so he’s a sitting duck for the raccoons, which have been marauding recently, mama and two kits.  Poor dude, he’s just lookin’ for love…)

…our aphid-infested herb garden.

Last week, we found a lady bug (AKA lady beetle, lady bird beetle) wandering around on the ground; we scooped her up and put her on a cilantro plant badly infested with aphids.  A few days later, the flower stalks of the plant were alive with the black-and-orange alligator-like larvae of the ladybug.  There were so many aphids on these stems, the larvae stuck around, pupated, and hatched into mint new beetles.  Here’s the process in photos (A & E Shock).

We didn’t think to look for eggs, so the first thing we saw was about two dozen larvae slurping up aphids on the cilantro plant.  In the picture on the right >>, the final instar of a larva (lower) is attaching itself to the stem in preparation of pupating.  The critter above it, which looks like a wrinkly beetle, is what it becomes: a pupa, waiting for the beetle inside to reach adulthood.

<< The next photo shows a newly-emerged adult beetle clinging to its empty pupal husk.  The unripe tomato color of its wings deepens as it dries, possibly in response to UV exposure.  Also, ghostly gray dots appear and darken along with the elytra.  The wings, pale yellow and transluscent, retract fully under the elytra, and the beetle is ready to trundle — or fly — off.

The photo below shows two empty pupal cases, the sun shining through them and split open like… well, like invertebrate pupal cases, abandoned where their larvae attached to the stem.

Finally, the familiar mature, deep red-orange, sun-spotted lady bugs spread out, looking for food and mates to start the cycle all over again (below).

Hard not to appreciate the aphids giving up their sticky little plant-sucking lives for such a delightful result.  And, thanks, ladybugs, for clearing out the thuggish aphids.  Not to anthropomorphize or anything…

Says me: few plants are more gratifying than prickly pear cactus, Opuntia spp. At least, if you live in the desert, or any reasonably dry place.

Actually, even in not so dry places: we saw some naturalized in Aoteraroa (New Zealand), which seemed frankly bizarre, knowing how much rain that island gets (see the photo hanging off the very bottom of the post, like how NZ hangs off the bottom of the world).

And there are species that grow in cold-winter climates — like one that used to surprise me every time I saw it in the dry glades of Missouri.  It would lie down flat under the snow in winter, and just wait, hunkered down, for spring.  I seem to recall its Latin name was Opuntia humifusa, which at least sounds like it means that it grows stuck to the soil.

So, pretty much anywhere you live, there’s probably a variety of “pear” that will grow and bloom in your conditions, with little care other than a basic knowledge of what kind of light conditions it prefers, and how much moisture it requires or can tolerate. (Photos E.Shock; not color-enhanced)

The top two photos are of a couple of Opuntia blooming now in our yard.  The first one is Opuntia aciculata, or Chenille prickly pear, named after its deceptively velvety cinnamon spines called glochids; the other is a variety of Santa Rita prickly pear (Opuntia santa-rita), named after the southern Arizona mountains that are its home range.  The purple color of the pads is natural for this cactus if it’s allowed to grow with available moisture: it gets greener when it’s grown lushly, or in monsoon season when rain is more plentiful.

<< A naturalized “pear” growning in Rotorua, New Zealand.  Probably a sub-tropical species.  The plant it’s growing up into could be Manuka, famous for the honey bees make from it.

You may know that Opuntia pads are actually water-storing stems.  The plant’s leaves, sometimes only present for a short time as new pads are forming, grow on the edges and faces of young pads; you can see some tiny green-and-red leaves on the newest pads above the yellow flower on the Rita-pear above.

Hoover the feral African collared dove has solved the problem of how to drink from the swimming pool: board the chlorine float.  The health ramifications of this (for the bird) may be dubious, but watching him neatly land on a floating, bobbing object with a smallish deck area is a thing to behold.  He fastidiously holds his tail up off the water, and bends over to drink, tipping the float steeply, but he still manages to hold on.

<< Hoover afloat (photo A.Shock)

We’ve seen other urban birds, most often Great-tailed grackles, a fearless, strong, and adaptable species, do the same thing.  They will also swoop low over the pool, and nimbly scoop meaty yummies like moths and beetles off the surface, risking becoming swamped if they make too much surface contact.  But we’ve never found a grackle in the pool, so it’s a successful foraging strategy for them.

… and we were — always — this Great horned owl (Bubo virginianus) was giving us the eye from our big backyard pine tree, right at sunset tonight.  The Gila woodpeckers, doves, and local hummers — both Anna’s and Black-chinned — were really ticked off at the eminence tigre, and zoomed and hovered threateningly.  I’m unable to report if the owl even noticed.

The noise of the scolding yard birds, and the nervous upward glances of the “wild” African collared dove, Hoover, tipped us off.

<< Great horned owl (Photo A.Shock)

Hiding behind a shred of pine-bough seems to be a mere formality for the large owl.  It’s probably looking for another Desert cottontail, to follow up the one it helped itself to part of on the weekend, leaving the rest of the bunny for the resident raccoons.

Just to even things up, here’s what it feels like to be BIRD-WATCHED:

(Photo E.Shock)

This is “Hoover” the semi-tame wild African collared dove who inhabits our neighborhood, wondering why we don’t have a handful of peanuts NOW.

To indulge in a moment of natural history, notice how the eye is set in a slightly pinched or narrow part of the bird’s head.  This enables both forward and rear vision, in addition to panoramic side-vision.  This eye placement is typical of prey animals (the pursued) rather than predators (the pursuer), whose eyes tend to be placed for superior forward vision.  Except for the beak (!), a dove’s head shape is very much like a rabbit’s.  Without the big ears, of course, which would definitely be an aerodynamic liability.

For other Three Star Owl posts featuring Hoover, click here.

<<  Two of these equals these. ↓

Desert cottontails abound in the yard right now.  The desert is green from the late winter rains, so there’s lots to eat.  Adult frolicking leads to tiny bunlets.  The two in the photo above on the right were stashed by mom in a shallow scrape right out in the open.  When we discovered them, while checking on the mantis egg case, they were barely 3 inches long.  A day later, they were gone, leaving only the “form” behind in the mesquite leaf litter.  Moved by mom, eaten, or hopped off under their own power, we’ll never know.

(All photos E.Shock)