Tag Archives: Tramea lacerata

The 1st Summer 2019 Naturalist Field Trip, 06-15-19

I got up at 4:00 this morning, got the dog fed and outside to pee, and then headed out to Woodland for our first field trip for the summer naturalist class.  I got to the Woodland Library around 5:45 am and waited for my coworker Bill and the students arrive. The weather was VERY cooperative today. I was worried that the summer heat would make our field trips unbearable in the summer, but today it was nice.  It was in the low 60’s when we headed out, and only about 78° when we came back, so that was great.  There was also a slight breeze which helped, too.

When everyone got to the library and had signed in, we all headed out to the Sacramento National Wildlife Refuge.  I left my car in the parking lot and went with Bill in his van along with our student, Jeanette, who is a middle school teacher.

  • Locate and identify at least fifteen (15) animal species (birds, amphibians, reptiles)
  • Locate and identify at least ten (10) plant species
  • Locate and identify at least ten (10) insect species

While we were walking around the nature center, I think they all got the majority of those requirements!  The insects were probably the most difficult for everyone, but we’ll see on Friday (at class) how well everyone did. 

Near the nature center, we came across a large fat weevil sitting on the top of the flowering head of a tule.  Bill rapped on the weevil a couple of times and figured it was dead, but when I stroked it, its feet moved, so we all inferred that the weevil was in a state of torpor, waiting for the sun to get a little higher in the sky so it could warm up more and start moving around. 

Everyone took photos of it and tried to identify it using the iNaturalist app we’d told them about in class on Friday.  It came up as a Billbug Weevil from the genus Sphenophorus. If you look at the map in iNaturalist, though, you’ll see that Billbug Weevils have been sighted all over the globe. So, calling this a Billbug Weevil is somewhat accurate, but for a more precise ID, I wanted the students to try get down to the species level on the weevil when they got home. Insects can be especially hard to ID because there are literally millions of them, and you have to deal with taxon levels that include superfamilies, tribes and subtribes before you can get close to the species. It will be interesting to see how far the students are able to get.

We also found a buckwheat plant that I didn’t recognize as buckwheat at all because its shape wasn’t like any buckwheat plant I’d seen before.  The signage by the plant said it was California Buckwheat, Eriogonum fasciculatum, as did iNaturalist, but that didn’t quite look right to me. The leaves were the wrong shape.  So, I did a little more research, and I believe it was actually St. Catherine’s Lace, Eriogonum giganteum, a kind of wild buckwheat that usually only grows in Southern California. When we were studying the plant, two of the students (Jeanette and Edna) also observed that some of the flowers still had their pink pollen balls and others did not… and we inferred that those that didn’t have their pollen balls anymore had already been pollinated.

Buckwheat, St. Catherine’s Lace, Eriogonum giganteum, with pollen blass intact

When it came time to drive the auto-tour route, I drove Bill’s van so he could do more observations, and Jeanette and another student, Mica, a retired farmer, came along with us. Bill was able to open up both sides of his van, so the gals could get an unobstructed view of what was out on the preserve. Although everyone was able to go at their own pace along the route, we stopped at two of the park-and-stretch areas so we could compare notes and get a closer look at things.  At the first stop, the students Ken and Alison, who are already expert birders, were helping the students spot and identify bird species and also explained what they meant when they talked about the birds’ GISS.

GISS stands for “General Impression, Shape, and Size” (originally a military term). Birders often use the bird’s GISS as a way to do a preliminary or in-field identification of a bird when it’s backlit (only seen in silhouette) or is too far away to see any details of its coloring. So, Alison and Kent were able to distinguish a pair of Northern Harriers flying over our heads from the Red-Tailed Hawk that was flying near them by nothing but their GISS. Very cool.  I’m nowhere near being that kind of an expert. 

At the second park-and-stretch spot, students relaxed with their lunches for a little while, and I was able to find a couple of examples of a specific kind of gall to tell them about, a Cottonwood Petiole Gall and is created by the aphid, Pemphigus populitransversus. The wingless female aphid called a “stem mother” chews at the leaf petiole (the stalk that joins a leaf to a stem) until it swells and then she climbs inside the swelling and has her babies inside of it. The baby aphids are born live and can be in either a winged form (called an “alate”) or without wings.

Cottonwood Petiole Aphid Gall,
Pemphigus populitransversus

While the students were resting and checking up on their notes, one of them, Alison, let us see what she’d put into her field journal for the morning. She’s an artist, and she uses fountain pens and watercolors to write and decorate her entries. It was beautiful. I can hardly wait for Friday when all the students share their journals, so I can take photos and let you see what they’re doing…

I also overheard a couple of students talking about how much they enjoyed the class, how much they’ve learned already (in just two sessions) and how many resources we’ve introduced them to that they didn’t even know existed before now.  That is so gratifying!

One more learning moment: On the eucalyptus trees along the end auto-tour route on Saturday, I also stopped to pull a leaf off of an obliging eucalyptus tree, so I could show the students in our vehicle the white teepee-like formation on it that some folks mistake for galls.  The formations are actually called “lerps” and they’re created by a tiny insect called the Red Gum Lerp Psyllid, Glycaspis brimblecombei. These insects spin little white houses for themselves made of sugars and wax pulled from the leaves. They’re often very sticky with the honeydew produced by the insects.             

When we were done with the tour, everyone went their separate ways.

Species List:

  1. American Bullfrog, Lithobates catesbeianus,
  2. American Robin, Turdus migratorius,
  3. American Wigeon, Anas americana,
  4. Anna’s Hummingbird, Calypte anna,
  5. Ash-Throated Flycatcher, Myiarchus cinerascens,
  6. Bermuda Grass, Cynodon dactylon,
  7. Bewick’s Wren, Thryomanes bewickii,
  8. Billbug Weevil, Sphenophorus sp.,
  9. Birds-foot Trefoil, Lotus corniculatus,
  10. Black Phoebe, Sayornis nigricans,
  11. Black Saddlebags Dragonfly, Tramea lacerata,
  12. Black-Tailed Jackrabbit, Lepus californicusm,
  13. Blessed Milk Thistle, Silybum marianum,
  14. Brewer’s Blackbird, Euphagus cyanocephalus,
  15. Bristly Oxtongue, Helminthotheca echioides,
  16. Buckwheat, St. Catherine’s Lace, Eriogonum giganteum,
  17. Bulbous Canary Grass, Phalaris aquatica,
  18. Bullock’s Oriole, Icterus bullockii,
  19. California Flannelbush, Fremontodendron californicum,
  20. California Fuchsia, Epilobium canum,
  21. California Ground Squirrel, Otospermophilus beecheyi,
  22. Canada Goose, Branta canadensis,
  23. Cinnamon Teal, Anas cyanoptera,
  24. Cleveland Sage, Salvia clevelandii,
  25. Common Checkered Skipper, Pyrgus communis,
  26. Common Minnow, Phoxinus phoxinus,
  27. Common Teasel, Dipsacus fullonum,
  28. Cottonwood Petiole Aphid Gall, Pemphigus populitransversus,
  29. Coyote Brush, Baccharis pilularis,
  30. Desert Cottontail, Sylvilagus audubonii,
  31. Eurasian Collared Dove, Streptopelia decaocto,
  32. European Heliotrope, Heliotropium europaeum,
  33. European Starling, Sturnus vulgaris,
  34. Field Bindweed, Convolvulus arvensis,
  35. Field Mustard, Sinapis arvensis,
  36. Flax-leaved Horseweed, Erigeron bonariensis,
  37. Floating Water Primrose, Ludwigia peploides ssp. peploides,
  38. Fremont Cottonwood, Populus fremontii,
  39. Gold Dust Lichen, Chrysothrix candelaris,
  40. Goodding’s Willow, Salix gooddingii,
  41. Great Blue Heron, Ardea herodias,
  42. Great Egret, Ardea alba,
  43. Greater White-Fronted Goose, Anser albifrons,
  44. Great-Tailed Grackle, Quiscalus mexicanus,
  45. Green-Winged Teal, Anas carolinensis,
  46. Italian Thistle, Carduus pycnocephalus,
  47. Jimson Weed, Datura stramonium,
  48. Mallard, Anas platyrhynchos,
  49. Marsh Wren, Cistothorus palustris,
  50. Monarch Butterfly, Danaus plexippus,
  51. Mosquitofish, Gambusia affinis,
  52. Mourning Dove, Zenaida macroura,
  53. Mute Swan, Cygnus olor,
  54. Mylitta Crescent Butterfly, Phyciodes mylitta mylitta,
  55. Narrowleaf Cattail, Cattail, Typha angustifolia,
  56. Narrowleaf Milkweed, Asclepias fascicularis,
  57. Northern Bluet Damselfly, Enallagma cyathigerum,
  58. Northern Pintail, Anas acuta,
  59. Northern Shoveler, Anas clypeata,
  60. Oleander Aphid, Aphis nerii,
  61. Pied-Billed Grebe, Podilymbus podiceps,
  62. Poison Hemlock, Conium maculatum,
  63. Raccoon, Procyon lotor,
  64. Red Gum Lerp Psyllid, Glycaspis brimblecombei,
  65. Red-Winged Blackbird, Agelaius phoeniceus,
  66. Rough Cocklebur, Xanthium strumarium,
  67. Sharp-leaved Fluellen, Kickxia elatine,
  68. Showy Milkweed, Asclepias speciosa,
  69. Spotted Orb-Weaver Spider, Neoscona crucifera,
  70. Striped Horsefly, Tabanus lineola,
  71. Sunburst Lichen, Xanthoria elegans,
  72. Teasel, Wild Teasel, Dipsacus fullonum,
  73. Tule, Common Tule, Schoenoplectus acutus,
  74. Turkey Tangle, Fogfruit, Phyla nodiflora,
  75. Variegated Meadowhawk Dragonfly, Sympetrum corruptum,
  76. Western Fence Lizard, Sceloporus occidentalis,
  77. Western Kingbird, Tyrannus verticalis,
  78. Western Meadowlark, Sturnella neglecta,
  79. Yellow Starthistle, Centaurea solstitialis

Lots of Exuvia Today

Damselfly exuvia on a tule frond. © Copyright 2016, Mary K. Hanson. All rights reserved.
All of the “white stuff” you see on this tule is the exuvia of dozens of damselflies. © Copyright 2016, Mary K. Hanson. All rights reserved.

I had planned on sleeping in a bit today, but woke up around 5:00 am anyway, so I got up about 5:30 and then headed out to the Sacramento National Wildlife Refuge.  It was about 53° when I left the house and got up to about 77° by the late afternoon.  We had a breeze for most of the day so it was actually quite nice outdoors.

I put some gas in the car and then continued on toward Willows and the refuge. Whereas some days provide me with a lot Kingbird photos, or squirrel or jackrabbit photos, today I got a lot of Western Fence Lizard pictures.  Those guys were out everywhere.  I even came across a mating pair.  Lizard-porn.  Hah!

This rock looked like a rabbit to me.
This rock looked like a rabbit to me.

The other big attractions (for me anyway) was being able to photograph several  large dragonflies and finding LOTS of damselfly exuvia (the skin they shed when they emerge from the water and transform into winged damselflies).  I also found a few damselflies that had just shed their skin and didn’t have their wings entirely pumped up yet.  The exuvia looks so neat to me.  It’s the exact shape of the damselfly naiade, but is hollow and looks like a ghost or a reflection of the insect.  So cool!

Around that same area, I also came across a male Great-Tailed Grackle that actually followed my car for a while as he sang for the females.  He paused among the tules in a few locations and did some displaying and more singing.  He was really entertaining!  I got a few video snippets of him, and at one point he took a break from his songs to eat damselflies… A snack between concerts.

There were plenty of jackrabbits and cottontails, of course, but not so many of them posed for me today.  I also had to deal with a particularly shy Common Gallinule. It was way down in the tules along the bank and I was practically shooting at it “blind”.  Somehow the camera managed to get some photos in focus.  I was so pleased.  I was likewise hindered by the tules when I saw a joined pair of Green Darner Dragonflies land on the water.  I held the camera out the window, over my head, trying to get the camera’s eye over the top of the tules, and shot straight down at the water… and I somehow got the shot I wanted of the female dragonfly laying her eggs in the water.  Miracle.  I even got a shot of another male coming into the frame and the first male chasing it off – while still attached to the female. Woah!.

The Great Horned Owl owlets were out of their nest and sitting on an open branch of their tree.  Mom wasn’t with them the first time I passed them, but she was there when I went by again later.  The owlets are the same size as their mom now, just… “fluffier”.  You can tell by looking at the owlets which one is a little bit older than the other.  Great-Horned Owls usually lay their eggs several days apart… so there’s always a least one in the nest that’s older than the others. The mother hawk and her fledgling were in their own nest this morning, too.

I saw several mule deer, including a young male who was coming into his “velvet” (getting his new antlers; they were stubby but very visible on his head). I also came across a young Turkey Vulture who was sitting on the edge of an open gate holding his wings out to the sun to warm himself up.  He actually stayed there long enough for me to get a few close-up shots of him.

At other points along the auto tour, I’d stop and just listen to the sounds around me: Red-Winged Blackbirds and Meadowlarks singing, egrets croaking, grebes woo-woo-wooing, Night Herons doing their brisk “wok!” call… It’s a jungle out there, man.  I loved it.

CLICK HERE for a video of the Great-Tailed Grackle singing.

CLICK HERE for a video of a Marsh Wren singing.

On my way out of the refuge, I drove past one of the sloughs and could see something big and dark moving under the surface of the water, but I couldn’t tell what it was.  I parked the car and craned over the passenger side seat and out the window to see if I could get a better look at it.  Definitely some kind of large fish… but the shape wasn’t right to be a catfish…  I think it might have been a young Northern Pike!  If it was a pike, then anything else living in the water is in trouble; those guys are aggressive hunters.  It never came all the way to the surface, though, so I couldn’t really tell for certain.

There was also one spot, just before the exit, where I stopped to look into the drainage ditch – because you never know what you might find in there – and I spotted a Black-Crowned Night heron lurking in the shade.  Someone came up behind me in her car and flashed her lights for me to get out of her way.  Uh – I’m photographing here!  Grumbling, I drove up the road a little distance and pulled over for her to pass, and then backed up to the ditch again so I could get a few more shots of the heron.  They weren’t great, but at least I got them.

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Around 2:00 pm I headed back to Sacramento and got home around 3:30 pm.