Tag Archives: eriophyes fraxinivorus

Lots of Snowy Egrets, 05-31-19

I got up about 5:30 this morning, fed the dog his breakfast and then headed out to the Cosumnes River Preserve for a walk.

There was little to no water in the “wetland” areas, so not a lot of birds or dragonflies. I walked along the slough on the side of the road, and then walked through the oak woodland to the nature center, and then back to the car.  Along the slough, I saw Tree Swallows, a pair of Western Kingbirds, and a trio of Brown-Headed Cowbirds doing their bowing thing. They were on the top of a tree, so bowing was difficult, and they kept rolling off their twiggy branches. Eventually, they gave up and flew off.

Further along, I came across a small flock of Snowy Egrets who were feeling for things in the water with their feet.  As I was watching them and taking pictures, a Great Egret flew in and joined them. Seeing the great Egret and the Snowy Egrets side-by-side really exemplifies their size difference. It looked like a mama bird with lots of babies around her.  Some of the Snowy Egrets were flashing their top knots at one another. I got the sense that it was a more an aggressive, territorial thing than a romance thing. None of the birds had their long, trailing feathers in; and none of them were sporting the pink blush in the face the Snowies get when their breeding.

CLICK HERE for the album of photos.

Beyond the regular Oak Apple galls, there weren’t a lot of other ones out yet. I saw some Red Cones just starting to grow – looking like tiny red pimples on the leaves of some of the Valley Oaks.  I did see the curling leaf galls and “flower” galls on the ash trees, but not as much as I’m used to seeing.

As I was walking through the oak woodland, I was surprised to see a large flock of American White Pelicans fly overhead. By the time I got my camera up and focused, though, they were gone. It’s always so neat to see those big birds flying.  They don’t look like they should be able to stay aloft, but they’re so graceful in the sky.

I also got a glimpse of a Green Heron when he flew out from the rushes around the bridge area, and up into a willow tree.  There were so many twiggy branches around him, though, it was hard to get any decent shots of him.

Near the nature center, I saw some House Finches, Anna’s Hummingbirds, and a baby cottontail rabbit. The baby was a surprise; my brain couldn’t get itself around how small it was at first, and I just stared at it. I did come to enough to get a few shots of the bunny before it scrambled away, though.

Even going down to the boat launch area, I was surprised by the lack of insects. I was hoping to see dragonflies, damselflies and spiders there, but… nothing.

I walked for about three hours and then started to head home.  My insides were starting to complain, and I hurried to the restroom near the boardwalk area where my car was parked – only to find that the thing was locked shut. Seriously?! Guh! I hate it when that happens.

Species List:

  1. American White Pelican, Pelecanus erythrorhynchos,
  2. Anna’s Hummingbird, Calypte anna,
  3. Ash Flower Gall Mite, Eriophyes fraxinivorus,
  4. Ash Leaf Curl Aphid, Prociphilus fraxinifolii,
  5. Asian Ladybeetle, Harmonia axyridis,
  6. Bermuda Grass, Cynodon dactylon,
  7. Bindweed, Field Bindweed, Convolvulus arvensis,
  8. Birds-Foot Trefoil, Lotus corniculatus,
  9. Black Phoebe, Sayornis nigricans,
  10. Blue-Eyed Grass, Sisyrinchium angustifolium,
  11. Broadleaf Cattail, Bullrush, Typha latifolia,
  12. Broadleaf Mistletoe, Phoradendron macrophyllum,
  13. Brown-Headed Cowbird, Molothrus ater,
  14. Buttonbush, Cephalanthus occidentalis,
  15. California Brodiaea, Brodiaea californica,
  16. California Poppy, Eschscholzia californica,
  17. California Wild Rose, Rosa californica,
  18. Cleveland Sage, Salvia clevelandii,
  19. Common Knotweed, Persicaria lapathifolia,
  20. Common Yarrow, Achillea millefolium,
  21. Convergent Ladybeetle, Hippodamia convergens,
  22. Coyote Brush Bud Gall Midge, Rhopalomyia californica,
  23. Curly Leaved Dock, Rumex crispus,
  24. Desert Cottontail Rabbit, Sylvilagus audubonii,
  25. Doveweed, Turkey Mullein, Croton setigerus,
  26. English Field Daisy, Bellis perennis,
  27. Fennel, Sweet Fennel, Foeniculum vulgare,
  28. Floating Water Primrose, Ludwigia peploides,
  29. Goodding’s Willow, Salix gooddingii,
  30. Great Blue Heron, Ardea herodias,
  31. Great Egret, Ardea alba,
  32. Green Heron, Butorides virescens,
  33. Green Pea Aphid, Acyrthosiphon pisum,
  34. House Finch, Haemorhous mexicanus,
  35. Hoverfly, Syrphidae,
  36. Hummingbird Sage, Salvia spathacea,
  37. Jointed Charlock, Raphanus raphanistrum,
  38. Killdeer, Charadrius vociferus
  39. Lippia, Turkey Tangle, Fogfruit, Phyla nodiflora,
  40. Long-Jawed Orb Weaver, Tetragnatha extensa,
  41. Oak Apple Gall Wasp, Andricus quercuscalifornicus,
  42. Oregon Ash, Fraxinus latifolia,
  43. Pearly Everlasting, Anaphalis margaritacea,
  44. Poison Hemlock, Conium maculatum,
  45. Poison Oak, Toxicodendron diversilobum,
  46. Purple Finch, Haemorhous purpureus,
  47. Purpletop Vervain, Verbena bonariensis,
  48. Rabbitsfoot Grass, Polypogon monspeliensis,
  49. Red-Winged Blackbird, Agelaius phoeniceus,
  50. Seven-Spotted Ladybeetle, Coccinella septempunctata,
  51. Snowy Egret, Egretta thula,
  52. Swift Crab Spider, Mecaphesa celer
  53. Tree Swallow, Tachycineta bicolor,
  54. Tule, Schoenoplectus acutus,
  55. Valley Oak, Quercus lobata,
  56. Variable Flatsedge, Cyperus difformis,
  57. Western Fence Lizard, Sceloporus occidentalis,
  58. Western Kingbird, Tyrannus verticalis,
  59. Wild Onion (white), Allium sp.,
  60. Willow Apple Gall Wasp, Pontania californica,
  61. Willow Bead Gall Mite, Aculops tentanothrix,
  62. Willow Bud Gall Mite, Aculops aenigma,
  63. Willow Stem Gall Wasp, Euura exiguae,

Insects at the Wetlands, 09-09-18

I headed out to the Cosumnes River Preserve to see how things looked there.

On the way to the preserve, I counted 15 hawks along the highway (not including two that had been hit by cars), and that seemed to bode well, but at the preserve itself it’s still pretty bleak. They’re just now starting to pump water into the wetland areas, but today there was only a puddle at the far end of the boardwalk. Not enough to support many birds; and what birds were there flew off as soon as they saw me.

There is also no water along Desmond Road, so nothing to see there either. I DID get to see a handsome juvenile Red-Tailed Hawk along the also-empty slew. It had landed on the cracked and dried bed of the slough… but was then chased off by a very brave ground squirrel. The hawk flew up into the naked branches of a nearby tree, and I was able to get quite a few photos of it before it took off again.

CLICK HERE for the full album of photos.

Since there wasn’t much else to see, I pulled by focus in tighter and started combing the few surrounding trees and shrubs with my eyes for any sight of galls, insects and other stuff like that. It took a little time, but I was rewarded for my patience.

I found single specimens of three different species of dragonfly: Easter Forktail, Green Darner and Blue Dasher. All of them were in the trees, not moving, trying to warm themselves up in the morning sun. I also found several Praying Mantises (mostly boys and one girl), and a fat adult Katydid. I got some of them, including the Katydid, to walk on my hands. I also spotted some Trashline Spider webs but couldn’t see the spiders themselves.

Along the road I found a large bird’s nest that had fallen out of a tree, and, sadly, some road kill including an opossum and *waah! a Black-Tailed deer fawn. The fawn was smashed flat, so it must’ve been hit by a semi or something. I can’t imagine how traumatic that must have been to its mother. The fawn was a newborn, still in its spots…

As for the galls, I also found several different kinds: Spiny Turbans, Club Galls, Round Galls, Oak Apple galls, and every some “Woolybear” galls (Sphaeroteras trimaculosum). There were also the galls of the Ash Flower mite on an ash tree.

My sister Monica had asked what “galls” were specifically… Galls are malformations caused by the interaction between a plant and an insect (like a wasp or midge or mite), a plant and a fungus (like rust fungus), or a plant and another plant (like mistletoe). To protect itself from the insect, fungus or other plant, the host plant (or tree) forms a protective layer of material over the intruder, and that protective layer is the gall. Galls can be in the leaves, in the bark, on the branches, or on the flowers, seeds, catkins or acorns.

The Woolybear galls I saw today, for example, are formed on the backside of oak leaves when a cynipid wasp lays its egg on the leaf. A chemical in the egg tells the tree “grow something here”, and also gives it a blueprint of what to grow. So, what you’re seeing in the photos is actually fuzzy plant material that the oak tree grew to protect itself from the developing critter inside the egg. The wasp larva grows inside the gall and then exits when its mature. Each wasp species has its own unique gall (and some have two different ones in the same year).

Anyway… I walked for about 2 hours and then headed back home.

Saw My “Nemesis Bird”, 07-04-18

Happy Fourth.  I went out to the Cosumnes River Preserve for a walk and was disappointed to see most of the water now gone from the slough by the boardwalk paring lot. That was the only “wet” left in the wetlands area – and animals that depend on that water don’t have ready access to it anywhere else.

Anyway, I hung around the slough for a while to look for early summer galls and insects, and while I waited I did get to see a few birds.  Belted Kingfishers are like my “nemesis” birds. I’ve spent YEARS trying to get a halfway decent photo of one of them. They’re super-fast and super shy… So, I was overjoyed when this female stopped on a tree across the slough from me and posed for a while.  I also saw a Green Heron who was “caw-honking” to another one across the road from it: call and response. I’d never heard that from this species before, although I’m sure they do it all the time, so that was cool, too.

CLICK HERE to see the full album of photos.

Bushtits, several Great Egrets and Snowy Egrets, Killdeer, and some Tree Swallows were among the other birds that came by.  I also saw the head of a Red-Eared Slider Turtle and a Western Pond Turtle poke up from the shallow water at different intervals.

As for the galls, I saw some Oak Apple wasp galls, Ash Flower galls, Spiny Turbans and a few Round Wasp galls. It’s really too early in the season for most of them. Another month and different species should be popping up all over the place.

When I was done walking at the slough, I drove up the road to the nature center and just walked the boat ramp walk there.  Lots of people taking their kayaks down to the river, but not a lot of critters or bugs. I was hoping to see some dragonflies and damselflies, but no such luck. I did get to see a little Trashline Spider, though, and a gorgeous male American Goldfinch.

I was out for about 3 hours and headed back home.