Tag Archives: beaver

A Beaver and a Loon at Lake Solano Park, 03-16-19

The weather at Lake Solano Park was perfect for walking with my naturalist students; about 49° when we first got there, and then up to about 68° by the time we left. It was sunny, clear and bright outside. My coworker Bill and I took turns pointing things out to everyone, and one of the students, Charlie (who’s something of a plant expert) helped us identify plants.

CLICK HERE for an album of photos.

When I got to the park, Bill and some of the students were already there, and some of them had already spotted an otter in the water. What a great way to start their day! Other highlights during the outing included spotting a beaver in the lake (!) and a Common Loon (!!) which I had never seen there before. We at first thought the beaver was another otter, but it’s large size and big ears brought us to the conclusion of its true identity. It was moseying along in the water, and treaded water for a long time, so we were able to get some photos of it. ((I think I took about 500 photos of its head poking out of the water. Hah!)) Eventually, it made its way to the other side of the lake and disappeared into the shadows. We inferred it might have had a lodge over there although we couldn’t see one.

The loon was a big surprise. At first we were all looking at it, trying to wrap our heads around what we were seeing. Checking through a field guide, though, we were able to determine that it was a non-breeding Common Loon, most likely resting there during its migration through our region.

Deeper inspection of the skull and skeleton we’d found on Wednesday, seemed to indicate that they were from opossums, not dogs as we’d originally thought (based on the canine teeth). There were “too many” small teeth between the canines for the skulls to be from a dog, so opossum was the next best guess. I need to study skulls more deeply – especially the ones of the common animals around here.

I stupidly stepped into the ants’ nest near where we located the Giant Horsetail ferns again. I recognized the spot and tapped on the area with my foot to see if the ants were still there from Wednesday, but nothing emerged, so I thought it was safe to go in there… But as soon as my shadow passed over their nest, they came out in force again. I got bit a few time, but nothing bad. They weren’t Fire Ants; more like red Harvester Ants. But they were still angry about my trespass over their nest and practically “exploded” out of the ground to swarm all over me. The students helped to whack them off my clothes.

On another part of the trail, we came across a large colony of Velvety Tree Ants swarming over an old log. What alerted me to them was a White-Breasted Nuthatch that flitted down onto the log, snatched up an ant, and flew off, flitted down onto the log, snatched up an ant, and flew off several times in a row. Along the ridgeline of the log was a line of winged adults getting ready to take off to establish new colonies… and it was the big winged one the Nuthatch was after. Very cool.

On the lake were Bufflehead ducks mingling with Goldeneyes, and both Common and Hooded Mergansers (along with the egrets, some herons, and Canada Geese). On the shore were lines of turtles sunning themselves; both Red-Eared Slider Turtles and a few Pacific Pond Turtles. We also all got to watch a Belted Kingfisher on the other side of the lake, dive-bombing for fish in the water. Some of the students had never seen that before and were “wow-ing” at the speed of the little bird.

In the ponds, we found Water Boatmen, Mosquito Fish, Bullfrog tadpoles, and a Black-Fronted Forktail Damselfly that was “swimming” along the top of the water before it lighted on some algae to dry off. I’d never seen a winged damselfly swim before! So odd! I need to remember to bring my dip-net with me next time I go out there so I can scoop up some critters to photograph.

We walked for about 3 ½ hours, and all in all, I think I recorded over 60 different species (that we saw and/or heard). It was a good day.

Species List:

1. Acorn Woodpecker, Melanerpes formicivorus,
2. American Kestrel, Falco sparverius,
3. American Robin, Turdus migratorius,
4. Arundo, Giant Reed, Arundo donax,
5. Audubon’s Warbler, Setophaga auduboni auduboni,
6. Beaver, American, Beaver, Castor canadensis,
7. Belted Kingfisher, Megaceryle alcyon,
8. Bewick’s Wren, Thryomanes bewickii,
9. Black Phoebe, Sayornis nigricans,
10. Black-Fronted Forktail Damselfly, Ischnura denticollis,
11. Brewer’s Blackbird, Euphagus cyanocephalus,
12. Bufflehead, Bucephala albeola,
13. Bullfrog, American Bullfrog, Lithobates catesbeianus,
14. Bushtit, Psaltriparus minimus,
15. California Manroot, Bigroot, Wild Cucumber, Marah fabaceus,
16. California Scrub Jay, Aphelocoma californica,
17. Canada Goose, Branta canadensis,
18. Cattail, Broadleaf Cattail, Typha latifolia,
19. Chickweed, Stellaria media,
20. Cliff Swallow, Petrochelidon pyrrhonota,
21. Common Goldeneye, Bucephala clangula,
22. Common Loon, Gavia immer,
23. Common Merganser, Mergus merganser,
24. Double-Crested Cormorant, Phalacrocorax auratus,
25. Fresh Water Snail, Fluminicola sp.,
26. Galium, Bredstraw, Velcro-Grass, Sticky Willy, Cleavers, Galium aparine,
27. Giant Horsetail Fern, Equisetum telmateia,
28. Giraffe’s Head Henbit, Lamium amplexicaule,
29. Great Blue Heron, Ardea herodias,
30. Great Egret, Ardea alba,
31. Honey Fungus, Armillaria mellea,
32. Hooded Merganser, Lophodytes cucullatus,
33. Longstalk cranesbill, Geranium columbinum,
34. Mallard, Anas platyrhynchos,
35. Mistletoe, American Mistletoe, Big Leaf Mistletoe, Phoradendron leucarpum,
36. Mosquito fish, Gambusia affinis,
37. Mugwort, California Mugwort, Artemisia douglasiana,
38. Northern Mockingbird, Mimus polyglottos,
39. Pacific Pond Turtle, Western Pond Turtle, Actinemys marmorata,
40. Peafowl, Indian Peafowl, Pavo cristatus,
41. Phainopepla, Phainopepla nitens,
42. Pipevine Swallowtail Butterfly, Battus philenor hirsuta
43. Pipevine, California Pipevine, Dutchman’s Pipe, Aristolochia californica
44. Red Harvester Ant, Pogonomyrmex barbatus,
45. Red-Eared Slider Turtle, Trachemys scripta elegans,
46. Red-Shouldered Hawk, Buteo lineatus,
47. Red-Tailed Hawk, Buteo jamaicensis,
48. Red-Winged Blackbird, Agelaius phoeniceus,
49. River Otter, North American River Otter, Lontra canadensis,
50. Snowy Egret, Egretta thula,
51. Speedwell, Veronica arvensis,
52. Spotted Towhee, Pipilo maculatus,
53. Tree Swallow, Tachycineta bicolor,
54. Tule, Schoenoplectus acutus,
55. Valley Oak, Quercus lobata,
56. Velvety Tree ant, Liometopum occidentale,
57. Water Boatmen, Corixidae (family),
58. Western Bluebird, Sialia mexicana,
59. Western Screech Owl, Megascops kennicottii,
60. White Alder, Alnus rhombifolia,
61. White-Breasted Nuthatch, Sitta carolinensis,
62. Yellow-Headed Blackbird, Xanthocephalus xanthocephalus,

A Few Birds on a Brief Visit, 01-24-19

Around 9:00 am I headed over to the Effie Yeaw Nature Preserve to meet with their volunteer coordinator, Rachel. They needed someone to help out at the preserve. I’d gotten my Certified California Naturalist certificate through Effie Yeaw, so I thought that by volunteering there, I’d have the opportunity to give them back a little something.

I got to the preserve a little bit before my appointment time, so I walked around for a while and took some photos.

CLICK HERE to see them.

The Bugs Were More Interesting Today, 10-15-18

DAY 10 OF MY VACATION.  I got up around 6:30 this morning, expecting to meet with an on-line friend, Dee, at the Nimbus Fish Hatchery. Dee had to cancel at the last minute because her dog got skunked, but I decided to go to the hatchery for a walk anyway.

There wasn’t much of anything at all to see there.  The migrating waterfowl haven’t arrived yet, and the salmon ladder wasn’t operating.  But I did get to see some of the salmon in the river; their humped backs appearing through the surface of the water here and there. I also got to see a few birds: California Gulls, Herring Gulls, Common Mergansers, and a female Belted Kingfisher rushing back and forth along the riverbank. There was a Great Egret walking along the netting on the top of the fish raceways, trying to find a way in, and it actually made it in somehow for a little while. As soon as the employees realized it was in the raceway, they opened gates and shooed it out again.  I’ve seen Green Herons (who are much smaller and can hide more easily) inside the raceways just gorging on fish.  That Great Egret could’ve taken a lot of the larger fish if it hadn’t been seen as early as it was.

CLICK HERE for the album of photos.

The fish in the raceways “know” that when a shadow moves along the side of their enclosure, food is probably coming, so they go crazy – jumping and splashing, opening their mouths for fish-food to fall into. There are buckets along the raceways filled with food you can take to the fish, and every now and then, a truck goes by spewing food out of the side of it like a leaf-blower.

In a sort of gully/barrow pit next to the raceway area there were several Mallards, a Great Blue Heron and a Snowy Egret wading through the rocks and water looking for tidbits. I was able to get quite a few photos of the heron, but actually, some of the insects in the area were more interesting. I found a Mayfly, several ladybeetle nymphs and pupa cases, a large gravid praying mantis, and Green Stinkbugs, some of their eggs and several nymphs in different stages of development.

As I was leaving, I got a glimpse of a beaver swimming on the edge of the bank but lost it when it ducked underwater.