Sunday, March 1, 2026

Winter & Spring


Beginning on February 16th a winter storm moved in and dropped approximately 2.5' of snow in our neighborhood!!! It was the first and only big winter storm we've had this year! It was absolutely beautiful with intermittent blizzard-like flurries of snowfall over 4 days!  Luckily we didn't have to go anywhere that week, so I tromped around in the powder snow with my camera every day. It was a bit tough to keep my camera dry, but lovely to be out in the falling snow! The landscape had turned to a striking black and white palette

The North Yuba River 2/16/25

Common Goldeneyes (3 males - 4 females) - Bucephala clangula

To my delight I spotted a group of Common Goldeneye Ducks on the river! This time the females were also present. A few weeks ago, there had only been males. In the near future, when the weather turns to Spring temperatures, these ducks will migrate north to Canada and Alaska to breed. In the meantime, they are busy diving in the river to catch fish, crawdads, aquatic insects, and mollusks!

Osprey  - Pandion haliaetus

I was also thrilled to see an Osprey in a tree-top overlooking the river! Our river never freezes, so fish are available in the winter. However, trout seek out the deepest, slowest parts of the river in the winter. Their metabolism slows down significantly and they become lethargic. Rather than search for food, they hang out and wait for aquatic insects to pass by!  Midges are the main food for trout in the winter, as they complete their life cycle in winter and are readily available! It's been more than a week since I first saw this Osprey, but it is still here on the river! It must be successfully catching trout!

 
The sky was filled with thousands of small clumps of falling snow, 
in a hushed, muted silence!


A filigree of Black Walnut branches, delineated by the snow! 

Killdeer - Charadrius vociferous

To my COMPLETE surprise, a Killdeer showed up in our neighborhood, the day after the snowstorm ended!!! Such beauty! They are rarely seen in our area, as they prefer short-grass, open fields. I've seen them often in Sierra Valley in the springtime and summer.  This adult hung around for about 4 days that were mainly sunny, after the storm. I read up on what they eat and earthworms were part of their menu! So I dug up some of our compost pile and found some earthworms and night crawlers. I carried them down to where the Killdeer was hanging out and left them on the ground!  I didn't linger as the Killdeer made it very clear that my presence made him wary. About half an hour later I went to see if the earthworms were still there, and they were gone. Maybe the Killdeer found them, or maybe they just wriggled away into the surrounding brush!  I'll never know, but I hope the Killdeer got one of them at least! After several days of sunny weather, we recently got a day of heavy rain and the Killdeer is no longer around. I hope it flew down to lower elevations where it normally lives.

Another interesting fact is that a year ago today, on March 1st, I spotted a Killdeer up off the highway in my neighborhood, after a winter storm!  It makes me wonder if it could possibly be the same one that just visited us!  

Killdeer - Charadrius vociferous

Here's a photo of the one I saw a year ago!

Pittman Road in the Spenceville Wildlife Area

The Spenceville Wildlife Area

The snow melted quickly in our neighborhood, but I still felt the need to see some foothill greens, so my friends Mike and Patti and I went down to Spenceville for a hike this week! It had been a month since I'd been there, and the oak trees were just starting to leaf out and the grasses were even more lush and vibrant! It looked just like the above photo, that I took a year ago!!!


We hiked a six-mile loop through rolling hills covered with meadows and Blue Oak forests. We also passed several manmade ponds, one of which had a few delightful waterfowl! 

Pied-billed Grebe (adult) - Podilymbus podiceps

Pied-billed Grebes are uncommon. "Pied" means having two or more colors. They eat crustaceans, fish, frogs, and aquatic insects. They forage for food underwater, as well as on the surface of ponds and bays. Curiously they also eat a lot of their feathers! Apparently this helps in the formation of pellets that they cast to rid their intestine of undigested material. The Cornell Lab states: "Regular ejection of stomach contents minimizes buildup of gastric parasite population in upper alimentary tract." 

To escape predation they dive or sink slowly out of view, or hide underwater with only their eyes and nostrils just above the surface! Together the male and female build their floating platform of a nest out of dead and rotting aquatic plants. Additionally, they share the brooding of eggs and raising of the young. They are fierce defenders of their nesting territory, often attacking other waterfowl from underwater! What interesting, different habits this bird has! I'm always so amazed at how everything has evolved so specifically!

American Wigeon (male - female) - Mareca americana

American Wigeons are quite common throughout California in the Winter.  In the Spring, they migrate north to Canada/Alaska to breed. I've seen them several times down in Gray Lodge. The black tip of their bill, as well the dramatically colored feathers on the male's head, make them easy to identify! These dabbling ducks forage on primarily submerged aquatic plants, as well as on upland grasses, clovers, and seeds. American Wigeons swim more than most dabbling ducks, while foraging for submerged plants. They are also very good at stealing food from other ducks, especially diving ducks!

Valley Oaks - Quercus lobata

There were Valley Oaks interspersed throughout the Blue Oak woodlands, that hadn't leafed out yet. This particular pair of Valley Oaks had a variety of songbirds in them! We stopped and "bird watched" for a little while and were delighted with what we saw!

Oak Titmouse (adult) - White-breasted Nuthatch (adult) - Western Bluebird (juvenile male!)

Firstly we noticed several Western Bluebirds perching and flying around. I lucked out and got a photo of a downy male juvenile!  WOW!!!  Secondly, there were at least three or four visible White-breasted Nuthatches searching for insects in the tree trunk crevices! Lastly there were some tiny grey birds hopping around, that we later figured out were Oak Titmice! 

In the summer Western Bluebirds are primarily insectivores. In winter they eat fruits and berries, such as juniper, poison oak, wild grapes, and elderberry. They also particularly love to eat mistletoe berries, and will sometimes sleep overnight in a clump of mistletoe to defend their find! They like to live on the edge of open areas, such as meadows or burned areas. They are short-distance migrants, and generally move down slope in winter. Males have brilliant plumage, and females are dully colored in comparison.

We kept hearing loud repeated calls and finally figured out it was the White-breasted Nuthatches! Like the Red-breasted Nuthatches in our area, these little birds climb up and down the trunks and branches of trees, gleaning insects from the surface and crevices.

The Oak Titmouse lives year-round in the oak woodlands of California's coast, central valley, and foothills. Their songs and calls are the "voice and soul of the oak woodlands". The male Oak Titmouse has as up to 12 distinct songs, but usually 3 to 4, in its repertoire. An Oak Titmouse mates for life. During breeding season the male feeds and serenades its mate! The also defend their territory (up to 6 acres) with songs and calls exchanged between males! Their diet consists of insects, acorns, oak catkins, fruit and seeds. They usually live in the same location year round.

Acorn Woodpecker - Yellow-rumped Warbler
Melanerpes formicivorus - Setophaga coronata

We also saw several Acorn Woodpeckers that day. They are one of the dominant species in the foothill oak woodlands. Acorns are the main food they depend upon in winter. They store acorns by drilling holes in dead tree trunks and putting an acorn in each hole! These acorn filled trunks are called "granaries". Granaries have been known to contain up to 50,000 acorns!

We also heard Yellow-rumped Warblers, but never spotted one. These colorful birds spend their winters in warmer climates, and are some of the first warblers to return to our area in the spring. The Cornell Lab of Ornithology states: "Short to long-distance migrants, some western Yellow-rumped Warblers move to the nearby Pacific Coast to spend the winter. Other populations migrate to wintering grounds in Mexico and throughout Central America."

Sandhill Cranes - Antigone canadensis

To our delight we heard and saw hundreds of Sandhill Cranes flying overhead that day! WOW!!! They were heading north from California's Central Valley to their breeding grounds in northeast California, Oregon, Washington, and British Columbia. I just LOVE seeing and hearing them every year! Such amazing beauty!

Woodland Stars - Buttercup - Blue Dicks
 Lithophragma heterophyllum - Ranunculus californicus - Dichelostemma capitatum

We also saw a couple of wildflowers in bloom! They were scattered and few, but more will be popping up in the near future! 


At the end of our hike, we reluctantly left this beautiful green woodlands to go home, but we'll be back soon!


Come and join me for a talk on Saturday, March 21st about "Animals in Winter". It's a fundraiser for the Camptonville Community Center. Hope to see you there!

I will also post my next blog by Sunday, March 15th
Check back then to hear my latest Natural History News!  Thanks!

Sunday, February 15, 2026

Sierra Valley Raptors and more...

Prairie Falcon - Falco mexicanus

Two weeks ago, on February 2nd, my husband and I, and our friends Mary and Nancy, went over to Sierra Valley to hopefully see some raptors. We totally lucked out! We saw two different Prairie Falcons, one Rough-legged Hawk, lots of Red-tailed Hawks, several Northern Harriers, and two  Bald Eagles! It was quite a bird-watching day!!!

I had never seen a Prairie Falcon before! Wow!!! They are 16" in length, with a wingspan of 40", just about the same size as a Peregrine Falcon. Apparently they are year-round residents in Sierra Valley! We saw this one fairly close to Sierraville. The following information about Prairie Falcons is from the Cornell website http://allaboutbirds.org/.

"Prairie Falcons in summer eat mostly small mammals, particularly ground squirrels. They also eat pikas, birds, and insects. In winter, ground squirrels are not available, and the Prairie Falcon depends mainly on Horned Lark and Western MeadowlarkPrairie Falcons breeding in California and Utah also eat many shorebirds, Mourning Doves, and other bird species. Nesting pairs cache excess prey in clumps of vegetation and rocky areas within their territory, and males and females cache food in separate sites. Such caches provide a buffer against times when finding prey is difficult."

Prairie Falcon - Falco mexicanus

"This inhabitant of dry environments of western North America, where cliffs or bluffs punctuate open plains and shrub-steppe deserts, is an efficient and specialized predator of medium-sized desert mammals and birds, ranging widely in search of patchily distributed prey. Several species of ground squirrels are the mainstay of this species' diet; they provide fat-rich calories that pairs need for raising their broods of 4–5 young during the 3- to 4-month nesting season. When ground squirrels move underground to escape summer heat and dryness, most falcons leave their nesting areas in search of other prey. A hardy species, the Prairie Falcon has always made its living in lands that are susceptible to periodic droughts."

Prairie Falcon - Falco mexicanus

We saw this Prairie Falcon over near the Steel Bridge!

"Prairie Falcons breed in open country throughout the West wherever they can find bluffs and cliffs to nest on, including in alpine habitat to about 11,000 feet. Breeding habitats include grasslands, shrub steppe desert, areas of mixed shrubs and grasslands, or alpine tundra that supports abundant ground squirrel or pika populations. Breeding birds sometimes forage in agricultural fields. The majority of Prairie Falcons spend the winter in the Great Plains and Great Basin, in habitat that supports the Horned Larks and Western Meadowlarks that make up much of their wintertime diet. This includes grasslands, sage scrub, dry-farmed wheat fields, irrigated cropland, and cattle feedlots, where the falcons also prey on European Starlings."

How lucky we were to see these gorgeous falcons!

Rough-legged Hawk - Buteo lagopus

We saw this Rough-legged Hawk right near the Steel Bridge! It had been several years since I'd seen one, and my friend Mary had never seen one before! How exciting! These beautiful hawks breed in the taiga and tundra across Canada and Alaska, up to the high arctic. They feed on small mammals, including lemmings, voles, mice, shrews, rabbits and ground squirrels. In the winter they migrate down into the U.S. and inhabit pastures, marshy areas, and wet meadows.

Rough-legged Hawk - Buteo lagopus

They are not commonly seen in our area, except for Sierra Valley. Some years there are a lot in the valley in winter, other years there are few to none. We were so lucky to see one of these incredible, long-distance migrants! 

Red-tailed Hawk - Buteo jamaicensis

We saw more Red-tailed Hawks than any other species that day. They are one of the mostly commonly seen raptors in North America, and are found from coast to coast in the U.S. and as far south as Venezuela! Red-tails are medium sized hawks, measuring 19" in length, with a wingspan of 49", and a weight of 2.4 lb. They like to perch in trees, or posts on the edges of clearings or meadows, and watch for prey. Ground squirrels, gophers, rabbits, mice, snakes, lizards, kestrels, and meadowlarks are their main prey. They live in Sierra Valley year-round.

Red-tailed HawkButeo jamaicensis

Here's a good shot of it's red tail! Red-tailed Hawks are classified as "buteos" which are medium to large, stout bodied hawks, with broad wings and fan shaped tails. There are several subspecies of Red-tailed Hawks in the U.S. that have unique color morphs, including one that has a gray tail!

Bald Eagle - Haliaeetus leucocephalus

 We saw two Bald Eagles that day, and both of them were sitting on low fence posts! It was cold and windy, so maybe that's why they weren't soaring around or perching on telephone posts. They are year-round residents of Sierra Valley .

Northern Harrier - Circus hudsonius

These beautiful raptors are not classified as "hawks" they are "harriers". They were too hard to photograph as they were so distant, and flew so quickly. The composite above is from a few years ago.

 California Mule Deer - Odocoileus hemionus californicus

To our delight we also came across a small band of California Mule Deer. There were five females and one buck! They were camouflaged beautifully against the dry grasses and sagebrush of the Valley!

California Mule Deer (buck) - Odocoileus hemionus californicus

The buck looked like it had a few wounds on it's side and back thigh! No idea what might have caused the wounds, Mountain Lion, Wolf, barbed wire? 

California Mule Deer (does) - Odocoileus hemionus californicus

In late winter, Mule Deer usually band together in loose herds to be safer and warmer! The more eyes there are watching for predators, the better the protection! 

Sierra Valley looking East from Harriet Lane

The Valley was drier than I've ever seen it before. There was also a definite lack of waterfowl. However, it was still amazingly beautiful! I'm glad that there's a winter storm due to arrive this week, that will bring snow to the mountains and rain to the lower elevations. We need it! 

South Yuba River Beauty

A Short Hike at South Yuba River State Park

The day after our trip to Sierra Valley, my husband and I, and our friends Rod and Rochelle, went for a hike down in the South Yuba River State Park. It was gloriously green with lush grasses and a few early bloomers! The river itself was crystal clear and a rich glass-green color. Such beauty!
 
 Common Fiddleneck - Zig-zag Larkspur
Amsinckia menziesii - Delphinium patens

a tiny, slightly-opened Pipevine flower - maturing Pipevine flowers
Aristolochia californica

California Manroot - Nemophila
Marah fabaceus - Nemophila pedunculata

South Yuba River Beauty

We had a lovely walk and picnic above the beautiful river! Just wonderful! There's not doubt that we'll be back soon!

A big winter storm is supposed to arrive tonight!  It will start out rainy and then turn snowy over the next three days, with the potential of two feet of snowfall in our area!  A lot more snow is expected at the higher elevations. Thank goodness, as there's only a foot of snow up at Yuba Pass right now, at 6,709' in elevation! My neighborhood will probably look like the photo above in a few days!

Fingers crossed it all goes well! I'll let you know how it goes!

Check back in two weeks, on February 28th for my next blog!

Your questions and comments are always welcome. Please email me at northyubanaturalist@gmail.com. Thank you!

Sunday, February 1, 2026

Two Wildlife Refuges

The Sutter Buttes from the Spenceville Wildlife Refuge

These past two weeks have been sunny and warmish so we traveled to the lower elevations to see what was going on down there. This week I went to the Spenceville Wildlife Refuge, about a two hour drive to the west from our neighborhood. It is a beautiful rolling oak woodlands that I love visiting. The morning we arrived it was fresh and cool and LOTS of songbirds were singing! Just heavenly! My friend Hank and I hiked there for several hours enjoying the big sky vistas, the green lushness, and the filigree of the bare-branched Blue Oaks. Unfortunately I don't have time to write about all that we saw that day, but I plan to go back again within a month and I'll write more then. In the meantime, enjoy these photos!  

Meadowlarks - California Quail 
Sternella neglecta /Callipepla californica


Although the trees hadn't leafed out yet, the grasses created a rich yellow-green carpet throughout the reserve! Such beauty!


We passed by 6 manmade ponds that were filled with the chorus of frogs!


Here's a recording of that chorus!


I love how the reflection looks like the trees are straight and not branched!

Bedrock Mortar Site

I was privileged to be lead to two bedrock mortar sites within the preserve, by local writer, historian, and friend, Hank Meals! He has hiked in the Spenceville Wildlife Refuge countless times and has discovered mortar holes throughout the area. The following information about the local Nisenan People, who created these mortar holes, is from Hank's blog at https://yubatreadhead.blogspot.com/2018/12/the-spenceville-wildlife-area-rolling.html


We left in the late afternoon, with plans to be back again soon, 
when the oaks start to leaf out!

Red-tailed Hawk at the Gray Lodge Wildlife Refuge

Last week, my husband and I revisited the Gray Lodge Wildlife Refuge. To our completed delight the Snow Geese were there in the thousands! They hadn't been in the wetlands when we visited a month ago. The sight and sound of them are so much a part of Gray Lodge, that I really missed them on our previous visit. This visit they filled us with beauty once again! Yay!!!


Snow Geese Landing in the wetlands - Anser caerulescens


Here's a video of them landing and calling!
(Oops! Looks like you get to see the same video twice! I'll fix it soon!)


Some areas were just packed with Snow Geese!


Snow Geese - Greater White-fronted Geese - Northern Pintails
Anser caerulescens - Anser albifrons - Anas acuta


Double-crested Cormorants (adult/juveniles) - Nannopterum auritum


Northern Pintails (males/females) - Anas acuta


Gadwalls (female/male) - Mareca strepera

Green Heron with a tadpole (adult) - Butorides virescens


Green Heron swallowing a tadpole (adult) - Butorides virescens


Red-tailed Hawk (adult back & front) - Buteo jamaicensis


California Towhee (adult) - Bushtit (adult) 
 Melozone crissalis - Psaltriparus minimus


When we were leaving Gray Lodge the sun had come out and the water was filled with a myriad of glistening sparkles! How lucky we were to engage with such beauty!

Neighborhood News!
To my absolute delight I spotted another Pygmy Owl this week in my neighborhood! It was in the same vicinity of the one I saw a few weeks ago, so it is probably the same one. WOW!!!

Check back in two weeks, on February 14th, for the latest Natural History News from my neighborhood!

Your comments and questions are greatly appreciated. Please email me at northyubanaturalist@gmail.com