Tag Archives: Flame Skimmer

CalNat Field Trip #2, Lake solano Park, 07-13-19

On the way to Lake Solano Park for our second Certified California Naturalist field trip of the summer, I stopped to put some gas in my car, and I was treated with the sight of some hot air balloons floating over the city of Winters and its surrounding fields. One of the balloons was either dragging or coming in for landing because it got REALLY low over downtown. I could see the people in the basket.  I was kind of surprised to see the balloons at all considering that it was already about 62° when I got to Winters.  Hot air balloons only work if the air around them is cooler than the air in the balloon (so they fly more successfully in the fall-to-spring time period than they do in the summer.)

I was the first one in our group to get to the park and pulled up into one of the upper parking lots because the lot nearest the park itself was still closed.  Technically, the park doesn’t open until 8:00 am, so I was there before the all-gates-open time. The rangers weren’t too pleased that I was in the upper lot before 7:30 am, but they didn’t say anything – until AFTER 8:00 am and my students had arrived, and we were in the park area itself.  I’ll know better next time not to get there early.

The reason for trying to get my group there earlier in the day, though, was to try to beat the heat. It got up to 79° by 10:30 am. So, we cut the trip a little short to get everyone back in their air-conditioned cars before we all overheated. Along with my co-worker Bill and most of the students in the class, Greg Ira (the Director of the Certified California Naturalist program at the University of California) joined us for our walk.

CLICK HERE for the full album of photos.

One of the first things we pointed out to the group was the difference between the native Black Walnut trees and the English Walnut trees. English Walnut trees don’t generally do good in California, so they’re grafted onto the native Black Walnut root stock. We were able to show the students the graft mark in one of the trees (with the Black Walnut on the bottom and the English Walnut on top) and showed them that even through the tree itself was now primarily English Walnut, they could still see some shoots of Black Walnut stems and leaves growing up out of the root stock.

English Walnut grafted onto Black Walnut rootstock.

We seemed to hear more birds than we put eyes on, and my student Alison K., who like our student Ken E., is a birding expert, helped us with the sound IDs.  Alison also told the group about the sap wells we were seeing in the bark of some of the trees, created by Sapsucker birds who drill the wells not so much to suck the sap, but to attract insects they can eat.  On one tree we found several clear samples of the wells, along with some hefty outpourings of the sweet sap.

Tree sap oozing from wells drilled by Sapsuckers.

We also came across a large juvenile Great Blue Heron that was sitting in a tree adjacent to the trail.  It posed for some photos, pooped into the river and then flew off with a deep-throated croaky squawk. I guess he told us what he thought about us. We also came across a small creche of Peahens with their fledgling poults. A group of three moms were taking the babies to the edge of the river to get a drink.

 I myself was focused more on finding galls than seeing birds on this trip, however, and was able to point out newly budding examples of Pumpkin galls, Roll Gall Midge galls, Erineum Mite galls, Cluster Galls, Spiny Turbans, Two-Horned galls and Flat-Topped Honeydew galls. Most of the galls were just starting to emerge and weren’t their full size yet.  Give them another week or two and they should be spectacular.

 Our group also found quite a few different orb-weaver spiders included Spotted Orb Weavers and Long-Jawed Orb Weavers. And we spotted a variety of butterflies, dragonflies and damselflies including: California Pipevine Swallowtail butterflies, a sleepy Buckeye butterfly, a Painted Lady butterfly, and a Tiger Swallowtail butterfly on the wing; Widow Skimmer dragonflies, Flame Skimmers, Four-Spotted Skimmers, Pond Skimmers and Blue Dasher dragonflies, plus several damselflies that looked like they’d just emerged and weren’t colored-up yet.

Along with imparting some of what I know to the class, I always learn something new on these field trips or add to knowledge I already have, so it’s always fun and exciting to me. I found two galls I hadn’t seen before and found out that even the experts were having trouble properly identifying them. One was a gall made by the Roll Gall Midge (whose species is known but not its genus) and it took the form of rolled edges along the leaves of Live Oak trees.  The other was an odd tubular “prick” on the leaf of a Valley Oak tree. At first, I thought I was just looking at a weird anomaly on the leaf, but then I saw the exact same structure repeated on leaves of different Valley Oaks, so I took some photos and looked it up when I got home.  Experts recognize it as a wasp-induced gall but they don’t know what species it’s associated with yet, and think it might be a second-generation gall for an already identified gall wasp.  Everything I found on it called it a “Leaf Gall Wasp” gall but with the species listed as “Unidentified”. How neat!

Gall of the UNIDENTIFIED Leaf Gall Wasp.

 As we were looking at some California Wild Grape vines, Greg asked for the term for the process by which tendrils wrap around things. None of us could remember it at the time. Of course, when I got home, it came to me: “THIGMOTROPSIM”! Cool word, huh?  You can read more about it here: http://biology.kenyon.edu/edwards/project/steffan/b45sv.htm

Another word that wouldn’t come to mind yesterday when we were out on the field trip… We saw a lot of damselflies that had apparently just emerged and weren’t “colored up” yet, and I couldn’t remember the term for that state.  It’s “TENERAL“: the state of an insect immediately after molting. At this time the insect’s exoskeleton has not hardened and it may be pale in color.

A “teneral” damselfly

A little further along our walk, some of the students noticed frothy ooze coming out of the base of a Valley Oak tree. It looked something like Sudden Oak Death (SOD) to me, but it was a lot more frothy, and I’d never seen SOD near the bottom of a tree before. So, I looked it up when I got home.

 The foam is from a bacterial infection in the tree called “Alcoholic Flux” or Foamy Canker. It usually affects trees in the summer that have been stressed in some way. Bacteria infects the tree and ferments some of the sap. The fermentation is expelled by the tree in a frothy slime that kind of smells like sour beer. Unlike SOD, alcoholic flux isn’t usually a permanent or fatal kind of infection. It’s usually gone by the end of the summer.

“Alcoholic Flux” or Foamy Canker on the base of a Valley Oak tree.

We’d also seen a lot of small gnats around the ooze, and I’m not sure, but I’m going to infer that they were getting buzzed on the fermented juice. Hah!

By 10:30 it was already too hot to keep people out in the sun, so the group broke up and we all headed back to our cars by different routes.

Species List:

  1. Acorn Woodpecker, Melanerpes formicivorus,
  2. Alcoholic Flux bacteria, Foamy Canker, Slime Flux,
  3. American Bullfrog, Lithobates catesbeianus,
  4. Belted Kingfisher, Megaceryle alcyon,
  5. Black Phoebe, Sayornis nigricans,
  6. Black Walnut, Juglans nigra,
  7. Blue Dasher, Pachydiplax longipennis,
  8. Blue Elderberry, Sambucus cerulea,
  9. Box Elder Tree, Acer negundo,
  10. Bull Thistle, Cirsium vulgare,
  11. California Pipevine Swallowtail Butterfly, Battus philenor hirsuta,
  12. California Pipevine, Aristolochia californica,
  13. California Scrub Jay, Aphelocoma californica,
  14. California Wild Grape, Vitis californica,
  15. Canada Goose, Branta canadensis,
  16. Common Buckeye Butterfly, Junonia coenia,
  17. Common Merganser, Mergus merganser,
  18. Convoluted Gall Wasp, Andricus confertus,
  19. Eight-Spotted Skimmer, Libellula forensic,
  20. English Plantain, Ribwort, Plantago lanceolata,
  21. English Walnut, Juglans regia,
  22. Flame Skimmer, Libellula saturate,
  23. Flat-Topped Honeydew Gall Wasp, Dishopcaspis eldoradrnsis,
  24. Great Blue Heron, Ardea herodias,
  25. Green Shield Lichen, Flavoparmelia caperata,
  26. Hoary Rosette Lichen, Physcia aipolia,
  27. Indian Peafowl, Pavo cristatus,
  28. Interior Live Oak, Quercus wislizeni,
  29. Leaf Gall Wasp, Unidentified
  30. Painted Lady Butterfly, Vanessa cardui,
  31. Poison Oak, Toxicodendron diversilobum,
  32. Pumpkin Gall Wasp, Dryocosmus minusculus,
  33. Roll Gall Midge, Contarinia sp.,
  34. Spiny Turban Gall Wasp, Antron douglasii,
  35. Spotted Orb Weaver Spider, Neoscona crucifera,
  36. Sunburst Lichen, Xanthoria elegans,
  37. Two-Horned Gall Wasp, Dryocosmus dubiosus ,
  38. Valley Oak, Quercus lobata,
  39. Walnut Erineum Mite Gall, Aceria erinea,
  40. Western Pondhawk, Erythemis collocata,
  41. Western Tiger Swallowtail Butterfly, Papilio rutulus,
  42. Widow Skimmer Dragonfly, Libellula luctuosa,
  43. Woolly Aphid, Prociphilus sp.,

First Flame Skimmer of the Season, 05-12-18

I was out the door and off to the Effie Yeaw Nature Preserve once more to check on the development of the Monarch Butterfly caterpillars – and get some fresh air and exercise in, of course.

Before I left the house, I noticed there were a few Yellow-Billed Magpies out foraging in the neighbor’s yard, so I took some photos of them before they flew off.   When I got to the nature preserve, the first thing I saw was a small flock of male Wild Turkeys. They were parading and strutting around a single female who was more interested in finding breakfast than dealing with the boys. Hah!

I put on insect repellent, but there are these tiny, black, winged no-see-ums that forge through the repellant anyway and bite HARD. I don’t know what the species is, but I really dislike those things. They get all over you… creep me out worse than the ticks.

CLICK HERE for the full album of photos.

In the small pond by the nature center, the Bullfrog tadpoles are starting to change from water-breathers to air-breathers, and they popped up to the surface periodically to gulp in some air before retreating back down into the water. All you can see through the murky water when they come up is their pale belly and their big mouths. So funny.

The Monarch caterpillars grew a lot over the week, so many of them where about as long as my index finger. There were still a lot of babies, though, so the preserve should have a good crop of new butterflies in a couple of weeks.  This is the time of year when birds are making and feeding babies, but they leave the Monarch and Pipevine Swallowtail caterpillars alone – because the caterpillars are packed with noxious poisons from the plants they eat. I found one new Pipevine Swallowtail chrysalis on the side of an oak tree already. No sign of the gold-bejeweled Monarch chrysalises yet.

I also got photos of the first Flame Skimmer dragonfly I’d seen this year. They’re such neat looking things. The dragonfly sat long enough and still enough that I was able to get some close-ups of its wing-structure.

I later watched some Harvester Ants bring in new seeds and stuff, and remove old seeds and whatnot from their in-ground bivouac. It seems like they were transferring the old stuff to a different part of the nest through an extra hole in the ground.  Looking more closely I could see that they also removed the dead bodies of some rival ants… And some members of the colony apparently didn’t read their emails because they were bringing the new seeds in through a hole that was “exit only”. It was a crack-up watching them.

There weren’t too many deer out today, but I did see a lone doe, and a young buck who looked like he’d been attacked by wasps. His chin and bottom lip were swollen which made him look kind of goofy. There are ground-dwelling Yellow-Jackets that have hives all over the preserve; maybe this guy was browsing too close to one of those.

Come to think of it, one of the Red-Shouldered Hawks I came across today had a swollen eye – like can be rough out in Nature. The swelling didn’t seem to interfere with the bird’s eyesight or it’s ability to navigate; and it didn’t look like the bird was blind on that side, so maybe it was a temporary impairment.

As I was on my way out of the preserve, I saw some of the docents doing a presentation for a small group of Scouts with their animal ambassador, “Orion” a young Swainson’s Hawk. According to the Effie Yeaw website: “…Orion was dropped off at the UC Davis Raptor Center with a broken wing in 2017. Although his injuries healed partially, there were some lingering issues that would prevent him from completing the long migration down to Argentina. It was also discovered that Orion was an imprint, or lacking a natural fear of humans, and therefore dependent on people for his survival. However, this resulted in an easier transition for Orion to become one of our amazing animal ambassadors…”

I’d walked for about 3 hours, and then headed home for the day.

All Sorts of Critters Were Out Today! 07-30-17

I got up around 5:30 and headed over to the Effie Yeaw Nature Preserve.  The sun was just coming up as I got there.

When I first started walking the trail, I could hear Wild Turkeys in the trees around me, so I looked for them.  They were waaaaaaaaay the heck up in the trees, about 60 or 70 feet up squeaking and gibbering at each other.  They’re not super strong fliers, but they can travel short distances when they want to.  As they came out of the trees, though, I could hear them crashing through leaves and branches.  One zoomed right over my head and landed (not too gracefully) in a tree down the trail from me.

Click Here for the full album of photos and video snippets.

As I was walking down another part of the trail, I saw two fawns hiding in the branches of some low-growing tree, so I stopped to look at them.  They were caught between being scared and being curious. One would inch its way forward and then retreat while the other stuck its nose out toward me to check my scent… I went around the side of the trees – but slowly, haltingly, because I didn’t want to startle them – and saw their mom coming toward me from across a shallow field.  She had left her kids in the shade while she browsed.  When the fawns saw her, they ran right up to her and started to nurse. So cute!  I got a little video of that.  Then. While the babies were out n the open, I took a bunch of photos of them.  Their mom wasn’t too sure about my camera, so she maneuvered herself in between me and her kids, and then walked them back toward the trees.  She then went around behind me and across the trail – and the fawns went running and stotting after her.  Made my morning.

Right after I saw them, a mother Wild Turkey came down the trail with her fledgling poult. Just the one; I’m assuming she lost the others.  There are a lot of coyotes around there.  In fact, as I was heading out of the preserve later, I saw one of the docents standing in front of the nature center. “You just missed a great shot,” she said.

“Mother and fawn?” I asked.

“Mother chasing a coyote away from her fawn!”

Whoa.

I came across other deer, including another female with one fawn that was a little older than the spotted twins but still “snack sized”.  And I saw two bucks in their velvet. I was able to get some photos of one of them, but the other one bolted as soon as he saw me.

Lot to Fox Squirrels and California Ground Squirrels around. It seemed like every Fox Squirrel I saw was chewing through the hide of a black walnut. One of the Ground Squirrels was makings its loud chirp!-chirp!-chirp! alarm call.  There was actually a Siamese cat out there, stalking it. The cat gave up, though, when the squirrel kept up its racket.

I got to see and get some photos of a Flame Skimmer dragonfly as well as a blue Pondhawks, and also found my first Saucer and Spiny Turban galls of the season.  More wasp galls should be making their appearance over the next month or so.

So I got to see a lot of different things on my 3 ½ hour walk, then I headed back home.