It was kind of a whirlwind trip today: left the house at 9:15 am, got to Woodland around 10:15, went to the White-Faced Ibis rookery at 10:30, and left the rookery around 12:30 pm. Phew! The weather did cooperate. There’s no shade at the rookery and I was worried it would be too hot there, but it was in the 70’s with a stiff breeze blowing, so temperature-wise it was nice. The wind kind of played havoc with my birding scope, though, and threatened to knock it over a few times, so I had to put it back into the car.
I was joined at the rookery by my naturalist graduates Karlyn, Kristie and her husband Joe (and their son-in-law Zak) and three of my current students Alison, Linda and Gina. They had never been there before and were surprised by the number of birds they were seeing right there in the middle of town.
The water in the pond where the ibises were actually seemed HIGHER today than it was the last time I was there and some of the established nests were already underwater. You’d think the people who control the pond would take that into consideration. I saw several eggs abandoned and floating in the water. So sad.
Along with the large gathering of ibises – talking to each other, gathering nesting material, sitting on their nests, flying back and forth – we also saw a few American Coots (one sitting on a nest and a few with babies), some Killdeer, a female Great-Tailed Grackle, some turtles (but we couldn’t tell if they were the native species or not), Black Saddlebags and Variegated Meadowhawk dragonflies and Familiar Bluet damselflies, including a pair “in wheel” (mating).
Watching the ibises pull nesting material from the bank I was surprised to see that they didn’t go for the dried grass. Instead, they drew up soggy grass from under the water at the edge of the pond and yanked it out by the beakful.
At the rookery, we also talked a little bit about the floating nests made by the ibises, grebes and American Coots. According to The Earthlife Web: “Coots build nests which though surrounded by water have a foundation of vegetation, which reaches the ground below. Interestingly the Horned Coot, Fulica cornuta, which breeds on mountain lakes in the Andes where water weed is scarce, build a foundation of stones nearly to water level before building the actual nest. More adventurous are various grebes. Grebes build the nests in shallow water, and though they are often anchored at one or two points they are basically floating on the water. This is necessary because grebes which are primarily water birds are very clumsy on land and find life works better if they can swim right onto the nest.”
I really suspect that the Coot
there had actually commandeered the ibises’ nests rather than building their
The students all seemed to enjoy themselves. One of them, Alison, actually did some quick watercolor paintings of the birds while we were there. A couple of the students also complimented me on the classes and said I was “a natural teacher”. It was such a nice outing.
American Coot, Fulica
Familiar Bluet, Enallagma civile,
Heliotrope, Heliotropium curassavicum var.
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,
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
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.
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.
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.
American Bullfrog, Lithobates catesbeianus,
American Robin, Turdus migratorius,
American Wigeon, Anas americana,
Anna’s Hummingbird, Calypte anna,
Ash-Throated Flycatcher, Myiarchus cinerascens,
Bermuda Grass, Cynodon dactylon,
Bewick’s Wren, Thryomanes bewickii,
Billbug Weevil, Sphenophorus sp.,
Birds-foot Trefoil, Lotus corniculatus,
Black Phoebe, Sayornis nigricans,
Black Saddlebags Dragonfly, Tramea lacerata,
Black-Tailed Jackrabbit, Lepus californicusm,
Blessed Milk Thistle, Silybum marianum,
Brewer’s Blackbird, Euphagus cyanocephalus,
Bristly Oxtongue, Helminthotheca echioides,
Buckwheat, St. Catherine’s Lace, Eriogonum giganteum,
Bulbous Canary Grass, Phalaris aquatica,
Bullock’s Oriole, Icterus bullockii,
California Flannelbush, Fremontodendron californicum,
California Fuchsia, Epilobium canum,
California Ground Squirrel, Otospermophilus beecheyi,