Tag Archives: Falco sparverius

Summer 2019 CalNat Class #4, 06-28-19

After an early morning meeting, I was totally exhausted by the time the naturalist class started. But I didn’t want to miss Hillary Kasemen from West Coast Falconry and her talk on falcons. 

She brought with her “Cubby”, a male Anatum Falcon (Falco peregrinus anatum) a subspecies of Peregrine Falcon also called an American Peregrine, “Aerial”, a female American Kestrel (Falco sparverius) and “Islay”, a female Lanner Falcon (Falco biarmicus).

We learned, among other things, that because they fly so fast (up to 200 mph in a dive) falcons have an exaggerated tubule in the nose to help channel air so they can breathe better. Jet engines are made with the same kind of “baffle” (nose cone) in the center. “This example of biomimicry is very retrospective in that engines weren’t first designed this way.” Nature never ceases to amaze.

And we also learned that the hoods often used in falconry help to calm the birds. Falcons take a lot of information in through their eyes, and can get visually over-stimulated at times. Put a hood or other covering over the eyes helps to cancel out some of that stimuli.

CLICK HERE for the full album of photos and some video snippets. #CalNat

Some students asked why we have presentations like this during the naturalist classes, and the reason is two-fold: (1) we want to introduce students to live specimens of species they might not otherwise encounter, and (2) we want to provide students who capstone ideas and volunteer opportunities.

Interesting Turkeys on the Naturalist Walk, 04-09-19

Up at 6:00 this morning, and then headed out to the Effie Yeaw Nature Preserve to do my trail walking thing – along with three of my naturalist students.  The weather was lovely, so the critters were out and moving around, and the wildflowers were really starting to open up.

We got to see a tiny female American Kestrel chase off a large Cooper’s Hawk, saw the young buck with a broken nose browsing with some of the does, and saw a yard-long gopher snake leave the side of the trail and rush through the grass like water.

We also came across a female Wild Turkey sitting on the ground next to a brush pile occupied by some California Ground Squirrels. Everything I’d read about the turkeys indicated that they nested in low branches of trees or ON brush piles, so even though she looked pretty settled on the ground I assumed she was just taking a dirt bath (which the turkeys often do to control mites).  I walked up to her, slowly, and she eventually stood up and walked away from where she’d been sitting: a bare, shallow patch of dirt.

When I got home, I did some more research on the turkey and found this: “…Wild Turkeys nest on the ground in dead leaves at the bases of trees, under brush piles or thick shrubbery, or occasionally in open hayfields. The female scratches a shallow depression in the soil, about 1 inch deep, 8–11 inches wide, and 9–13 inches long…” So, this gal may have been prepping a nest site, not dirt bathing.  I’ll have to check on the spot again the next time I’m out there.

Seeing the turkeys -– including one of the leucistic females who came out of the forest like a ghost – brought on a flurry of “snood” jokes. Four women on the trail talking about the male turkeys’ accouterments. We couldn’t help ourselves. Hahahahaha!

Oh, and I also learned that although the male hierarchy changes a lot as the males challenge, defeat, and retreat from one another, the female turkeys’ hierarchy remains constant from season to season, with a dominant female overseeing all of the ladies.  How cool is that?

We didn’t see the Mourning Doves on or near their nest, and I’m afraid they may have abandoned it.  When we got to the Red-Shouldered Hawk nest on the Pond Trail, however, mama hawk was in the nest and calling out to hubby. We could hear her, but we couldn’t see her. The nest is pretty deep and it’s right over the trail so it’s hard to see into it. Suddenly, mama hawk burst out away from the nest and flew right at and over one of the students! She was able to catch a photo of the hawk as she flew over her head! Awesome!

Among the flowers we saw were Blue Dicks, Bush Lupine, California Poppies, Fringe Pod, Periwinkle, Miniature Lupine, different kinds of plantains, and a variety of tiny yellow flowers that defied identification. On one of the plants was an example of “fasciation”, wherein the flowering heads weld together.  “…Scientists aren’t sure what causes the deformity, but they believe it is probably caused by a hormonal imbalance. This imbalance may be the result of a random mutation, or it can be caused by insects, diseases or physical injury to the plant. Think of it as a random occurrence. It doesn’t spread to other plants or other parts of the same plant…”

CLICK HERE to see the album of photos.

The ladies were wonderful trail walking companions: they were excited about everything, had great questions, and lots of wonderful feedback about the naturalist course. We walked for almost 5 hours (which was way too long for me) before we all headed back home again. Deborah had come all the way from Napa to walk with me, so she had the longest drive back home (over 2 hours).

I totally overdid it and was exhausted and in pain when I got home, but it was worth it to have spent those hours with the ladies’ positive energy.  Even though I practically went back to bed when I got home, I was happy. This is just how I want to spend what time I have left.

It was a good day.

Species List:

1. Acorn Woodpecker, Melanerpes formicivorus,
2. Asian Ladybeetle, Multicolored Asian Lady Beetle, Harmonia axyridis,
3. Bay Laurel, Laurus nobilis,
4. Black Walnut, Juglans nigra,
5. Blue Dicks, Dichelostemma capitatum,
6. Blue Oak, Quercus douglasii,
7. Buck Brush, Ceanothus cuneatus,
8. Bush Lupine, Lupinus albifrons,
9. California Ground Squirrel, Otospermophilus beecheyi,
10. California Manroot, Marah fabaceus,
11. American Kestrel, Falco sparverius,
12. Black Bean Aphid, Aphis fabae.
13. Boxedler Tree, Boxelder Maple, Acer negundo.
14. Bush Lupine, Lupinus excubitus.
15. California Plantain, Plantago erecta.
16. California Pipevine Swallowtail Butterfly, Battus philenor hirsuta,
17. California Pipevine, Aristolochia californica,
18. California Poppy, Eschscholzia californica,
19. California Scrub Jay, Aphelocoma californica,
20. Columbian Black-Tailed Deer, Odocoileus hemionus columbianus,
21. Cooper’s Hawk, Accipiter cooperii,
22. Coyote Brush Midge (gall), Rhopalomyia californica,
23. Coyote Brush, Baccharis pilularis,
24. Douglas Iris, Iris douglasiana,
25. Eastern Fox Squirrel, Sciurus niger,
26. European Starling, Sturnus vulgaris,
27. Fringe Pod, Thysanocarpus curvipes ssp. elegans,
28. Green Shield Lichen,Flavoparmelia caperata,
29. House Wren, Troglodytes aedon,
30. Interior Live Oak, Quercus wislizeni,
31. Lace Lichen, Ramalina menziesii,
32. Miniature Lupine, Lupinus bicolor,
33. Mourning Dove, Zenaida macroura,
34. Nutthall’s Woodpecker, Picoides nuttallii,
35. Pacific Gopher Snake, Pituophis catenifer,
36. Painted Lady butterfly, Vanessa cardui,
37. Periwinkle, Vinca major,
38. Red-Shouldered Hawk, Buteo lineatus,
39. Red-Tailed Hawk, Buteo jamaicensis,
40. Rio Grande Wild Turkey, Meleagris gallopavo intermedia,
41. Saw-Whet Owl, Aegolius acadicus,
42. Snowy Egret, Egretta thula,
43. Spotted Towhee, Pipilo maculatus,
44. Tree Swallow, Tachycineta bicolor,
45. Turkey Vulture, Cathartes aura,
46. Valley Oak, Quercus lobata,
47. Wavy-Leaf Soap Root, Soap Plant, Chlorogalum pomeridianum,
48. Western Redbud, Cercis occidentalis,
49. Western Fence Lizard, Sceloporus occidentalis,
50. Yarrow, Common Yarrow, Achillea millefolium,

Many Wrens and “Blue Bellies”, 03-30-19

I got up at 6:30 this morning and had some breakfast before heading out to the Effie Yeaw Nature Preserve again.

It was a gorgeous day weatherwise – sunny, cool in the morning and warm in the afternoon — so much so that we were actually able to keep the house open for most of the day.  It was about 43° when I got to the preserve and about 65° when I left.

CLICK HERE for the album of photos.

At the preserve, I didn’t walk the route that would have taken me by the spot where I spotted the hive last week; I checked out different trails.  There were no special stand outs during this walk, but there were House Wrens everywhere, singing their little hearts out.  I saw two males fighting over the same perches on which to sing; they must have had territories that overlapped or something. For such tiny guys, I’m surprised by how ferocious they can be.  I also saw Acorn Woodpeckers and European Starlings fighting over nest cavities. The Starlings are invasive, and the woodpeckers and other cavity-nesting birds lose breeding spots because of them.

I saw a few female Starlings doing their “baby bird begging” thing to try to get males to feed them. They sit out in open on conspicuous branches and flap their wings against their sides, gaping and calling out. So funny to watch.

Lots and lots of Audubon’s Warblers… I don’t remember ever seeing this many around here before. (They’re a kind of Yellow-rumped Warbler, differentiated from the others by their field markings.  They’re also affectionately referred to as “Butter Butts” for the bright yellow splotch on their rump where the tail attaches to the body.)

On a different part of the trail, I heard a California Ground Squirrel giving out a repeated alarm call, so I tracked it down, and found it in the field right across form the nature center. I was astonished by the fact that it had a gash in its nose and blood on the fur around its mouth and face!  The mamas can be incredibly brave and aggressive when it comes to protecting their burrows and babies, I know, but I’d never seen one in this condition before. There was also a bite mark on the ruff around its neck.  It was roughed up!

The squirrels are supposed to have different calls for land-based predators and air-based predators (like chickens do), but I don’t know their calls well enough to distinguish one from the other. I imagine it had fought a domestic cat (they hunt in the preserve) or something like that, and had to give it props for its tenacity, to keep on kicking and having the wherewithal to alert its fellow ground squirrels of danger nearby.

I saw lots of Pipevine Swallowtail Butterflies throughout the preserve. This is their time of year.  I was hoping to see some eggs but didn’t find any on this trip.  Maybe next time.

There’s lots of tall-tall grasses and sedges out right now, and all of the trees are budding their new leaves so the whole place is green-green-green.  I love this time of year!

I’ve been sort of dissatisfied with the macro photos I’ve been getting out of my camera, though, so I pulled out my cell phone to take some of the super close-up shots I wanted of plants and stuff.  The phone takes excellent close-ups, but it’s sometimes hard to manage holding that and my camera at the same time.  What we do for photos!

On my way out the preserve, I came across a male Mourning Dove doing his coo-ing thing from a tree branch. I love the way their whole chest and neck swell up with their song.  That cooing is most often sung by the male birds (not the females) and is used to “woo” the females.  Cooo-oooo-woo-woo-woo.

Because it was warming up outside, the Western Fence Lizards were out in force in some places.  (They’re also called Blue Bellies” for the bright blue underbellies of the males.)  Saw a lot of the boy doing “push-ups” and challenging rivals on different logs.

I walked for about 3 ½ hours and then headed back home

Species List: 

1. Acorn Woodpecker, Melanerpes formicivorus
2. American Kestrel, Falco sparverius
3. Audubon’s Warbler, Setophaga auduboni auduboni
4. Bedstraw, Velcro-Grass, Sticky Willy, Galium aparine
5. Black-Headed Grosbeak, Pheucticus melanocephalus
6. Blessed Milk Thistle, Silybum marianum
7. Blue Dicks, Dichelostemma capitatum
8. Bullfrog, American Bullfrog, Lithobates catesbeianus
9. Burr Chervil, Anthriscus caucalis
10. Bushtit, Psaltriparus minimus
11. California Geranium, Geranium californicum
12. California Ground Squirrel, Otospermophilus beecheyi
13. California King Snake, Lampropeltis getula californiae
14. California Manroot, Marah fabaceus
15. California Pipevine Swallowtail Butterfly, Battus philenor hirsuta
16. California Pipevine, Aristolochia californica
17. California Scrub Jay, Aphelocoma californica
18. California Towhee, Melozone crissalis
19. Columbian Black-Tailed Deer, Odocoileus hemionus columbianus
20. Common Pepper Grass, Pepperweed, Lepidium densiflorum
21. Dog Vomit Slime Mold, Fuligo septica
22. Eastern Fox Squirrel, Sciurus niger
23. European Starling, Sturnus vulgaris
24. Foxtail Barley, Hordeum murinum
25. Golden-Crowned Sparrow, Zonotrichia atricapilla
26. House Wren, Troglodytes aedon
27. Interior Live Oak, Quercus wislizeni
28. Lesser Goldfinch, Spinus psaltria
29. Little Plantain, Plantago pusilla
30. Mallard, Anas platyrhynchos
31. Miner’s Lettuce, Claytonia perfoliata
32. Miniature Lupine, Lupinus bicolor
33. Mourning Dove, Zenaida macroura
34. Northern Pacific Rattlesnake, Crotalus oreganus
35. Oak Titmouse, Baeolophus inornatus
36. Pacific Gopher Snake, Pituophis catenifer catenifer
37. Peregrine Falcon, Wek-Wek, Falco peregrinus
38. Pleated Ink Cap, Parasola plicatilis
39. Poison Oak, Toxicodendron diversilobum
40. Puffball Fungus, Bovista dermoxantha
41. Red-Shouldered Hawk, Buteo lineatus
42. Rio Grande Wild Turkey, Meleagris gallopavo intermedia
43. Rock Shield Lichen, Xanthoparmelia lavicola
44. Saw-Whet Owl, Sophia, Aegolius acadicus
45. Shepherd’s Purse, Capsella bursa-pastoris
46. Soap Plant, Wavy Leafed Soaproot, Chlorogalum pomeridianum
47. Spotted Sandpiper, Actitis macularius
48. Stork’s Bill, Big Heron Bill, Erodium botrys
49. Tree Swallow, Tachycineta bicolor
50. Turkey Vulture, Cathartes aura
51. Water Fern, Azolla filiculoides
52. Western Bluebird, Sialia mexicana
53. Western Fence Lizard, Blue Belly, Sceloporus occidentalis
54. Western Redbud, Cercis occidentalis
55. Western Tanager, Piranga ludoviciana
56. White-Breasted Nuthatch, Sitta carolinensis