Black Hawthorn Berries

The black hawthorn berries are ripening, and some of my feathered friends are there to start gobbling them up. I sat in the shade nearby for about an hour and saw cedar waxwings, robins, chickadees, and a scrub jay. The robins and cedar waxwings ate them whole. The chickadees would hang onto the cluster and eat them. The scrub jay plucked the berry and flew off with it to eat it elsewhere.

The black hawthorn is in the rose family and the berries are edible. I tried one, and it reminded me of eating a rose hip or a mealy apple. There were 4 seeds inside that were most of the berry. There was only a little fleshy part surrounding the seeds. Maybe they are not quite ready to eat. Birds tend to eat certain berries before they have fully ripened.

Red-tailed Hawk

Red-tailed hawks can often be seen soaring in the clear blue skies of summer. As they circle overhead, the sun illuminates their tail's warm, red feathers from where they get their name.

Red-tail hawks love the arboretum. It has the perfect habitat of open, grassy meadows that support an abundance of animals, like voles, mice, pocket gophers, ground squirrels, and rabbits. These small mammals make up most of the hawk’s diet. In addition, there are many tall trees and snags adjacent to these open spaces where the hawks can sit, watch, and wait for an opportunity to grab their prey.

Red-tail hawks also nest out at the arboretum. I usually see their nests in the crown of tall cottonwood trees along the river. They will often refurbish an old nest used in previous years or build a new one. The nest is a sizable construction of dry sticks up to 6.5 feet high and 3 feet wide. The inner part of the nest is lined with bark strips, fresh foliage, and dry vegetation.

The call of the red-tailed hawk is usually given while soaring. Peterson describes it as an “asthmatic squeal, keeer-r-r (slurring downward).” The Cornel Lab characterizes it as, “a hoarse, screaming kee-eeeee-arr.” While those interpretations are useful, I think they don’t capture the essence. To me, the line from section 52 of Walt Whitman’s poem Song of Myself truly expresses the call of the red-tailed hawk: “I too am not a bit tamed, I too am untranslatable, I sound my barbaric yawp over the roofs of the world.”

Nature is an inexhaustible source of wonder. Hope to see you out there.

Peterson, Roger Tory, et al. Peterson Field Guide to Birds of Western North America. 4th ed, Houghton Mifflin Harcourt, 2010.

Red-Tailed Hawk Overview, All About Birds, Cornell Lab of Ornithology. https://www.allaboutbirds.org/guide/Red-tailed_Hawk/overview. Accessed 7 July 2022.

Black-headed Grosbeak Babies

When the baby birds are born, they are nearly naked with their eyes closed. They have sparse grayish-white down which you can see on their heads. As one rears its head back wanting food, the light shines through illuminating its apricot skin color.

Both males and females equally share the chick-rearing duties of sitting on the eggs and feeding the young.

The nest is a loose construction of small sticks that is surprisingly sturdy. Sometimes, the sticks are woven in such an open and airy fashion, that the eggs are visible through the bottom of the nest. This may aid in regulating the temperature of the nest when brooding the eggs and raising the baby birds.

These fragile, tiny creatures are also pretty hardy. They have had to endure some cool, rainy temperatures this spring.

Western Screech-Owl

The Western Screech-Owl is a beautiful bird that lives year-round at Mt. Pisgah.

It is a small owl with a length of about 8.5 inches. It has conspicuous ear tufts and yellow eyes. Its coloration and feather pattern resembles the bark of trees which allows it to blend in excellently with its surroundings. It is usually gray, but its color can vary. In northwestern humid regions, it is usually a darker brown. In arid areas, it is paler and grayer.

It is a nocturnal animal that usually leaves its roost to forage at sunset and returns a little before sunrise. It spends the day either in a cavity or perched at the entrance. During the breeding season, the male roosts near the nest cavity.

It lives mainly in forested habitats of deciduous trees. The arboretum provides the perfect environment with Oregon ash, Oregon white oak, cottonwoods, and big-leaf maple trees. These trees, especially the Oregon ash, provide plenty of cavities for shelter and nesting. In addition, the trees border open meadows where it loves to hunt.

It is a carnivore that mostly eats small mammals, such as mice, voles, and pocket gophers. Its diet also includes birds, insects, spiders, fish, lizards, snakes, and frogs.

The Peterson Field Guide to Birds of Western North America describes its vocalization as a, “Series of hollow whistles on one pitch, running into a tremolo (rhythm of a small ball bouncing to a stand-still).”

Nature is an inexhaustible source of wonder. Hope to see you out there.

Pileated Nestlings

Yesterday evening I decided to sit near the pileated woodpecker cavity to see if I could learn more about the status of the nest. The last couple of weeks that I went by the nest, I didn’t see or hear any activity around the nest. I was starting to grow concerned that the nest had possibly failed somehow. After about 20 minutes, I saw a little pileated at the entrance. I was so delighted and relieved to know that there was at least one in there. He curiously looked around at the outside world for a few minutes and then settled back down inside. About 10 minutes later, two heads emerged at the entrance to have a look around for a few minutes. I continued sitting there and watching. After being there for 45 minutes, I was surprised that a parent had not come by to feed and check on them. I decided to move on just in case my presence was influencing the parents. Slowly walking away, I caught a glimpse of the female moving quietly through the trees. I continued to slowly move along and soon saw the male too. The parents were quiet and seemed to be intently studying their surroundings. Happy to know the family was together and well, I moved on.

Anna's Hummingbird Nest

This hummingbird nest is hidden among a thicket of lichen and honeysuckle vines. It is about 1 inch tall and 1.5 inches in diameter. It is made out of plant fibers and compactly held together by spider webs and/or insect cocoons. The female will further conceal the nest by decorating the outside of it with little bits of lichen or mosses. To make the interior cozy and warm, she will line it with small feathers or down from plants like cattail or willow. It is necessary during the chilly temperatures and rain of spring. The nest is truly a magical sight to behold.

Chipping Sparrow

I love this friendly little bird, and it has a cool Latin name—Spizella passerina. It has a black eye line with a white eyebrow. When breeding, it sports a bright rufous cap.

It likes to be around the White Oak Pavilion and the adjacent meadow. The Peterson Field Guide to North American Bird Nests says the chipping sparrow has a “Broad range of habitats with shrubby undergrowth that is often adjacent to grassy openings, including open coniferous, deciduous, and mixed forests, woodland edges, and clearings, along edges of montane meadows, riparian shorelines, in parks, orchards, farms, suburbs.” The arboretum is the perfect place for it to breed and raise a family.

I listened to it singing from the oak trees around the pavilion for about half an hour. The building seemed to be amplifying the sound, as I initially could hear it from the parking lot. Its song is a trill of evenly spaced dry chips.

It finally revealed itself and flew down to the ground to forage on some grass seeds. If you are quiet and still, this bird is accepting of your presence and you can get to watch it fairly up-close.

Be careful when identifying this bird by its song. The dark-eyed junco is in the area too and has a very similar trill. Good luck!

Wild Blue Yonder

“A nobler want of man is served by nature, namely, the love of Beauty.”
Ralph Waldo Emerson

All of the field guides are filled with science. They are overflowing with names and measurements like length, height, range, volume, shape, and time. This is one way to relate to the world, and it is part of my approach to learning and experiencing.

On the other side, I try to spend time out in nature letting go of all this information. Beyond the analysis and numbers are beauty and mystery, and I don’t have to go far to find them. It is hopping on the lawn and singing from the trees around the White Oak Pavilion. Although considered a commonplace bird, the American Robin is an amazing being. I am especially reminded of this every time I find its nest. It’s an elegant creation of lichens, mosses, grass, and mud cradling ethereal blue eggs. Seeing it evokes a sense of wonder out of reach of words.

Nature is an inexhaustible source of wonder. Hope to see you out there.

Pacific Wren Singing

This agile, little bird swiftly tumbles through the underbrush as it merrily searches for food. It ducks under fallen trees, disappears into thickets of sword fern fronds, and heroically bounds out onto a stump as it reappears.

It’s no surprise that its song is an energetic, warbling arrangement of notes that mimics its acrobatic movements.

Pacific Wren

Pileated Nesting

I have been trying to stay tuned in to the whereabouts of the pileated woodpecker pair that I posted about earlier this month. Ten days ago, I found the male making a substantial hole in a dead Douglas Fir. I wasn’t sure if he was searching for food or building a nesting cavity. I have returned there a couple of times to find him continuing to excavate the hole, so I feel that he is building a cavity for nesting. The last time I went by, he could get the top of his body inside the hole. Both the male and female excavate the cavity, but the male does more. The depth of the cavity can range from 10 to 24 inches, and it is 15 to 80 feet from the ground. It takes from 3 to 6 weeks to complete.

It is exciting to see a pair of them living and breeding at the arboretum.

Owl Pellets

The arboretum has perfect habitats for owls. There is an old barn with a silo for Barns Owls. There are old-growth cottonwoods along the river for Great Horned Owls. There are cavities in Oregon Ashes for Western Screech Owls and Northern Pygmy-Owls. There is a forested hillside with a mix of large Douglas firs, big-leaf maples, and incense cedars that attracted a Barred Owl this winter. Within all of the habitats, there are transition zones and open meadows that support an abundance of prey for owls—voles, mice, small birds, etc.

Owls will often spend consecutive days around the same perch from where they will roost during the day and hunt at night Most owls are nocturnal, but Northern Pygmy-Owls mostly hunt by day. Under these roosts, you can often find evidence of an owl’s presence: owl pellets.

Owls usually eat their prey whole or in large pieces. The fur, teeth, bones, or feathers of animals are indigestible. These parts are formed into an oval mass, passed back up the digestive system, and regurgitated some hours later, often while the owl is roosting. These pellets are a joy to find. On the outside, most owl pellets aren’t very remarkable. They are usually furry, matted orbs of hair. On the inside, they are a treasure of interesting bones, teeth, and skulls! Online there are illustrated charts that help identify all of the contents.

If you find it hard to locate an owl pellet, they are for sale. On the internet, I found a place in Baker City called Oregon Owl Pellets that sold large pellets for $3 apiece.

Nature is an inexhaustible source of wonder. Hope to see you out there.

Robin Building a Nest

The sun was shining Thursday, and it nicely warmed the day. It felt like spring had arrived.

I watched a female robin building her nest. She was collecting mud, grass, lichen, and other plant material. It was fun watching her build it. Sometimes she would land above the nest, drop the material into it, and then hop down to arrange it in the nest. As I watched her, she seemed free-spirited and joyful. She took a break every so often to forage and check in with her mate. He was always nearby watching and ready to chase off any intruders.

Pileated Woodpecker Pair

Standing at the top of the zigzag trail, I could hear hammering resounding through the forest. I walked down the path to find a pair of Pileated Woodpeckers on a dead tree. They were excavating small holes in the wood using their chisel-like bills as they searched for food.

They will make holes in trees to get to the tunnels of carpenter ants or wood-boring beetles and termites. The holes are often in a rectangle shape and can be quite deep—a good sign that a Pileated Woodpecker is in the area. You will see these characteristic holes on the older Douglas Fir trees near the juncture of the zigzag and hillside trails.

When a Pileated Woodpecker discovers an insect path inside the tree, it has an incredible tool to procure its food. Its tongue is part of a fascinating system of small bones and muscles that wrap around the back and top of the skull to its forehead. In What It’s Like to Be a Bird, David Sibley writes, “The long tongue has a barbed and sticky tip, and tiny muscles that allow the bird to bend the tip of the tongue in any direction, so it can follow twisting tunnels, trap prey against walls, and pry insects and larvae out of their hiding places deep inside a tree.” That is truly amazing!

In addition to the sound of pounding on trees, you can also hear the vocalizations of the Pileated Woodpecker reverberating across the landscape. Click here to listen to their calls on Cornell’s website All About Birds.

Once its sound has clued you into its whereabouts, you will be in for a real marvel. Assuming that the Ivory-billed Woodpecker is extinct, the Pileated is the largest woodpecker in North America. Both the male and female have flaming, red crests. The red on the male includes the forecrown, and he has a red mustache mark. Good luck in finding this spectacular bird!

Nature is an inexhaustible source of wonder. Hope to see you out there.

Junco Taking a Bath

The Birder’s Handbook: A Field Guide to the Natural History of North American Birds is a great resource. It has information on the biology of bird species “known to nest regularly on the continent, north of the Mexican border (with the exception of some exotic species that have escaped from captivity) and all the now-extinct birds known to have nested here since the arrival of Europeans.” The book is also full of essays covering different biological topics. Here is an excerpt from the essay “Bathing and Dusting:”

“…Feathers are marvelous and intricate devices, but keeping them functional requires constant care.
A bird is considered to be bathing whenever it uses any of several stereotyped movements to wet its feathers. One pattern, wading, is commonly observed in birds with strong feet and broad, short, flexible wings. In a typical sequence a bird stands in the water, fluffs the feathers to expose the bare skin between their bases, and rapidly flicks the wings in and out of the water. The breast is submerged and rolled vigorously back and forth, and then, as the front end emerges, the head is thrown back, forming a cup with the partially elevated wings and tail, and dousing the feathers of the back. Those feathers are elevated so that the water reaches the skin, and then lowered, forcing the water between them. The sequence may be repeated, with the bird submerging farther in each cycle, until it is a mass of soaked, disarranged feathers.
…Songbirds shake themselves to throw off water by vibrating wings and tail and ruffling feathers. All birds normally follow bathing with preening.”

The water in the creek is lightly flowing at the moment due to the lack of rain over the past couple of weeks. There are plenty of stretches where the water is shallow. The depth is perfect for songbirds to wade out into the creek and take a bath. I love watching them splash around in the water.

Remember to click on the photos to enlarge and scroll through them.

Bird Silhouettes

To identify birds successfully, many aspects are helpful to be in your awareness. In the front of Peterson’s Field Guide to Birds of Western North America 4th Edition, there is a section of excellent questions to consider with illustrations. For example, “What is its shape?” Peterson has two illustrations side by side and asks, “Is it plump like a starling (left) or slender like a cuckoo (right)?”

To cap off the end of the book, Peterson included three panels of illustrations of the silhouettes of birds—shore, flight, and roadside. This is an important reference when determining what bird you’re watching because the lighting isn’t always ideal. Can you guess the ones in the photos?

When it came to identifying birds in the field, Roger Tory Peterson was an expert and created an invaluable guide to help us learn and enjoy our time birding. Thank you for all of your hard work and dedication!

Saving Birds

One of the biggest hazards to the health and safety of birds is windows. The estimated number of birds killed every year by striking a window is 365 million to 1 billion.

Birds are unable to see the glass in the window as a solid object. In addition, the glass acts as a mirror. The reflection makes it appear that the surrounding sky and landscape continue.

The White Oak Pavilion at the arboretum was constructed with many windows to be able to connect with the surrounding landscape. To help deter birds from colliding with the windows, the arboretum decided to install vertical nylon cords to give birds the visual cue that it isn’t an open landscape. The cords are spaced out close enough to keep birds from flying through them. I have already seen chickadees land on the cord as they curiously poke around looking for food.

Lane County Audubon Society publishes a monthly newsletter called The Quail. In the November 2021 issue, Jim Maloney wrote a great article about the project at Mt. Pisgah to prevent bird collisions on the White Oak Pavilion. Click here to read it.

I am posting this now because migrating birds will soon be here. For some, Mt. Pisgah Arboretum is their destination. For others, it is a brief stopover to rest and fuel up before continuing on their journey. Birds can collide into windows year-round, but it happens more frequently during nesting season. Birds’ hormones become elevated as they start to establish and defend territories, find a mate, etc. So start thinking about installing a deterrent to window collisions, like the nylon cords. I’d like to give a shout-out to Karen in Minnesota. After visiting the arboretum, she decided to install something similar on the windows of her home. Way to go! The American Bird Conservancy has a list of resources to help to decide the best solution for you. Click here to check it out.

There are some informative and interesting articles about birds colliding with windows and research to prevent it. I have included links below to some of them.

Article on the All About Birds website by The Cornell Lab: “Glass Action: Advances In The Science Of Making Windows Safer For Birds, “ by Pat Leonard.

Article on the American Bird Conservancy website: “Birds Flying Into Windows? Truths About Birds & Glass Collisions From ABC Experts, “ by Christine Sheppard, Ph.D., and Bryan Lenz, Ph.D.

Article on the Audubon website: “Making Buildings Safe for Birds,” by Julie Leibach.

Western Bluebird

I frequently see a small flock of western bluebirds at the arboretum. When the mistletoe berries are ripe, I see them in the oak trees around the parking lot. I also find them in the meadow above the creek trail, in the vicinity of the barn, or in the south meadow.

On this cool, sunny afternoon in the south meadow, they were perched on the lower limbs of bigleaf maple trees as they scanned the ground for insects. When they located their prey, they quickly dropped down to the ground to catch it. They would often return to the maple limb. Or they would fly low across the ground and then rise to perch on an old flower stalk.

I usually hear them before I see them. They have a soft call note that can be given in flight or from a perch. Peterson describes it as a short pew or mew. Their song is strung together into gentle, stuttering notes that Audubon’s website describes as “a short, subdued cheer, cheer-lee, churr.”

Male western bluebirds have a colorful blue on their head, wings, and tail. Complementing the blue is a rust-orange breast and upper back. The female’s coloration is more muted. Her blue shows up as a subtle tint in the wings and tail. Her breast is a pale, orange wash. The throat is blue in males and grayish in females. Their bellies are whitish.

Nature is an inexhaustible source of wonder. Hope to see you out there.

Sources
Peterson, Roger Tory. Field Guide to Birds of Western North America. 4th ed. New York, Houghton Mifflin Harcourt, 2010.

Websites:
All About Birds by Cornell
National Audubon Society

Bushtits Eating Poison Oak Berries

About a week ago, I posted about poison oak berries being an important food source for birds because the hardy berries will linger on the plant into the winter months. Up to that point, I reported that I had only seen chickadees eating the berries.

On Saturday, I was watching a flock of bushtits performing their acrobatic routine through the landscape. The next thing I know, they had descended on a patch of poison oak and started eating the berries. I was delighted to have observed another bird eating them.

It was fun to watch them cling to the plant in all sorts of ways as they ate the berries.

Red-tailed Hawk

"Nothing makes the earth seem so spacious as to have friends at a distance. They make the latitudes and longitudes.”

Letter
Thoreau to Lidian Emerson
May 22, 1843

Happy New Year

May you find time to be in nature to absorb its serenity and carry it with you back into your daily life.