Author Archive | Dan Greaney

Floating Dinosaur Birds

American White Pelican

American White Pelican

What California bird weighs five pounds more than our ten-pound eagles, has a wingspan two feet longer than the eagles’ seven feet, and a beak twice as long as a great blue heron’s? What bird is rumored to eat its own young, and also to feed its young with its own blood? What bird is noted in a 1910 poem by Dixon Lanier Merritt as wonderful because “His bill will hold more than his belican”?

Yes, the bird is the American White Pelican. (And yes, the poem is by Dixon Merritt, not Ogden Nash.)

These old birds, with fossil relatives going back half way to the dinosaurs, are shy of people, and remain an infrequent sight in Shasta County. But they are here. They nest along the shallow lakes of north-eastern California, and they winter even closer, throughout the Sacramento River Delta. Occasionally we spot them.

American White Pelican Group In Flight

On a quiet summer day they might float high overhead. They typically proceed in a silent group of fifteen or so, with not a single one of them deigning to speak or flap a wing. Their long bills spear forward like a pteradactyl’s; their motionless, extended wings show black flight feathers on otherwise snowy plumage. They hang in the summer-blue sky, still as pallbearers, seeming beyond the rule of something as mundane as gravity.

But of course they are fellow Earthlings, and sometimes will tilt Earthward and glide severally into a water-ski landing on a shallow lake. They prefer shallow lakes because of their feeding style.

Brown Pelican Dive

Brown Pelican Dive

Their coastal cousins, the brown pelicans, plunge into the water and scoop a beak-full of ocean and, they hope, stunned fish. White pelicans, on the other hand, paddle along the surface to find their food. Frequently they group together to swim-herd fish into shallow coves, where they can more easily scoop a mouthful of prey, either from their normal floating position or by tipping tail-up like a mallard. White pelicans will swallow salamanders and crawdads, but they mostly dine on warm-water fish like carp and minnows.

Each spring, the adults’ beaks brighten from yellow to orange, and they develop a rounded ornamental fin on their upper bills—an accessory that perhaps one must be a pelican to admire. The mated pair scrapes out a hollow in sand or gravel where the female lays 2-3 eggs. Only one of the young will usually fledge. Their in-nest competition is fierce.

While incubating or otherwise resting, pelicans often tuck their bills down their front sides. It may be this habit and the red-orange bill of the breeding season that fostered the mistaken myth that adult pelicans feed the young their blood. They do not.

American White Pelican Resting

As for the grisly tale that parent pelicans eat their offspring: adult pelicans do not carry food to their young in their pouched beaks. They swallow the food and then regurgitate it for the nestling. On its part, the baby stimulates regurgitation by sticking its own beak down its parent’s throat. The scene looks very much like the parent is eating its baby, head first. The feeding practice and the tale it inspired are primitive and perhaps galling; but the unpretentious dining style seems to have worked for 30 million years.

White pelicans declined for the first half of last century, perhaps in part due to the loss of a major nesting rookery when the progenitors of the Westlands Water District drained Tulare Lake, which at the time was the largest lake surface west of the Mississippi. But now the pelicans are recuperating—into new trouble, expanding into the southeast where catfish farms create rich feeding grounds.

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Homes for Birds, Yard by Yard

Hermit Thrush

Hermit Thrush

For birds, yard after yard after yard adds up to a lot of potential homes. Backyard sanctuaries are pleasant for people, too, and fairly easy to provide. Just consider the basic elements of habitat: food, water, and shelter.

Providing food does not require filling feeders. Feeders can be fun because they draw birds for easy viewing, but they also require periodic cleaning to minimize spreading disease—say, once a month with a nine to one water to bleach solution. Hummingbird feeders require cleaning and refreshing every 2-3 days in the summer.

Plants will feed birds with less fuss. Berries and seeds on shrubs, grasses, and trees are all natural food supplies. Flowers, especially tubular ones like fuchsia and penstemon, offer nectar to hummingbirds. Benign neglect of gardens leaves old seedheads for winter consumption and unraked leaves for scratching through for the food they hold. Even without bird-edible fruits and seeds, plants feed insects, which become the main source of protein for songbirds around the world. Native plants are usually best, as they have evolved with the birds and insects of the area and usually support them most effectively.

Cedar Waxwing and American Robin

Cedar Waxwing and American Robin

Of course, avoid pesticides and herbicides. At worst they poison the birds, and at best they kill off the birds’ food source.

Plants also offer shelter. Some birds roost high in trees, others in shrubs, still others on the ground under brush. If décor and fire safety call for pruning up, consider retaining some low shrubbery for sparrows or quail. Woodpeckers carve numerous holes in dead wood, creating homes used by many bird species. You may choose not to leave whole snags standing, but just a standing trunk can invite excavations that bluebirds, wrens, flycatchers, titmice, nuthatches, and swallows will readily use.

Western Bluebird Male

Western Bluebird Male

Those familiar cavity-nesters will also use home-made nesting boxes. To find bird-house directions, at wintuaudubon.org see Places to bird/Attracting birds. In our area, it’s best to mount your birdhouses in shaded areas.

Ash-Throated Flycatcher

Ash-Throated Flycatcher

Of course, ensure that your yard is as feline-free as possible. Outdoor cats kill 15-20% of North American birds every year, including nearly 50% of suburban fledglings.

Water remains the elixir of life. A shallow pan, refreshed every day, makes an easy start. A trickle of running water invites many more visits. Small pumps are inexpensive and can run a home-made fountain if electricity is safely available. For permanent pools, mosquito-fish are available from Shasta County at (530) 365-3768.

Consider commercial fountains carefully. Songbirds prefer shallow puddles; a sloping edge will accommodate birds of different sizes for both drinking and bathing. Steep edges inhibit use.

Ruby-crowned Kinglet

Ruby-crowned Kinglet

Birds have lost vast swathes of former habitat. The wildfires are hardly the worst of it. If we can curb the super-sizing of them, fires are natural, and the cycle of light burn and fresh regrowth benefits many species. The more devastating disruption is the permanent and widespread habitat conversion of historical oak woodlands, wildflower fields, and riparian meanders into row crops, monoculture orchards and tree farms, pavement, and buildings. Now climate change is expected to further eliminate half the seasonal range of 314 North American bird species. It’s a tough time to be dependent on an ecosystem.

We can shape our yards to offer the food, water, and shelter that will help many birds still find homes.

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There’s Gold in Them Thar Hills!

Golden-crowned Sparrow

Golden-crowned Sparrow

Alas, it seems the miners of 160 years ago missed out on most of it. The Golden State holds so much more amber wealth and beauty than just the lustrous mineral.

Golden hues deck our world liberally, often with ephemeral but recurring glory and ache. They join with pinks and grays to brush our skies at dawn and dusk. In spring they gleam from the soft petals of poppies and the burry stripes of the bees who visit them, and the sweet honey that those two together produce; in fall, the hills and fields of dried grass, especially under sun after rain, glow goldenrod, and maples and oaks effuse geysers of leaves radiant with mustard and ochre and burnished apricot; blonde cider flows from foothill orchards, and under foothill streams trout flash their brilliance. Gold shines in the eyes of blackbirds and eagles, and in bright braids from sun-dappled rivers and lakes; and this time of year, every year, from the optimistic caps of brown little birds, like something hopeful in the miner’s pan.

Golden-crowned Sparrow

Adult Golden-crowned Sparrow

Golden-crowned sparrows are mostly a camouflage of browns and grays, perfect for hiding in under-brush shadows. But like so much of life, they have their shine, too—just a modest dash of color, for them. Adults wear their golden crowns offset with a circlet of black. Young birds sport a smaller, paler spot of yellow, bordered not by black but a nondescript earth tone, like last year’s leaves. Some observers note that the pinkish bill of young birds goes gray with age, starting with the upper mandible.

Golden-crowned Sparrow

First Winter Golden-crowned Sparrow

These sparrows have been northward throughout the summer months. Denizens of the west, they nested from northern British Columbia up into Alaska, as far as the Arctic Circle, where, tucked among grasses and shrubs in boggy meadows, they wove a dense cup lined with feathers or moose hair, perhaps just above spring snow but most often on the ground. They raised a clutch or two with about four eggs in each.

Golden-crowned Sparrow

First Winter Golden-crowned Sparrow

Now both parents and fledglings have flown south, centering their winter range right here in northern California. They can be seen at backyard feeders, although they are generally wilder and scarcer than their racier, more numerous cousins, the white-crowned sparrows.

White-crowned Sparrow

White-crowned Sparrow

Like many sparrows, golden-crowns have a beautiful voice. In our brushy yards and hillsides they can be heard on sunny winter mornings, singing a clear Oh, dear, me! that manages to be both woebegone and beautiful.

Studies on these birds are few, but the sparrows are part of recent measurements of mass bird migrations. Weather radar, with increasing precision, has in the last several years harvested information on not just storm clouds but on clouds of birds. The researchers report spring migrations over the US/Canada border at about 2.6 billion birds. The return trip, coming south in autumn with a new season of surviving fledglings, numbers about 4 billion.

Those nesting seasons are immeasurably valuable. They keep the gold recurring in California.

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A Burning Question Beyond a Bird’s-eye View

Osprey Covering Young

Osprey Adult Shading Young

Something’s wrong, and the birds can’t figure it out. Day to day and year to year, it’s hotter. The birds go about their daily lives as they always have, and their days are too few, their minds too scripted, to even see that there’s a change. But they pant more. Vigor wanes, and they sing less. Rather than snuggling down to warm their eggs and chirp gently to the young inside, they stand over the eggs to shade them. Nestlings die from dehydration and heat exhaustion.

And then the fires hit. Most nestlings had already fledged this year, so at least for the mobile songbirds, and probably for most of the quail, turkeys, grouse, and roadrunners, too, escape was possible—a little by foot, and a lot by flight. Of course not all survived the firestorms, but Shasta Wildlife Rescue and Rehabilitation reported a single avian burn victim, a Great-horned Owl with scalded feet.

Carr Fire Burned House

Where did they fly? People who lost their homes might be able to tell you: wherever they could. But housing grows short. Even where humane values are diligently exercised there is upheaval. And birds are not particularly humane. They are birds, after all, not people.

Even with their best quail-like fellowship, they must crowd into smaller areas where there is still water to drink and vegetation to support the insects they feed on. But not all those places are seasonally ready to support them. The berries may not have ripened, and the fall salmon are not yet decaying along the riverbanks. Disease spreads more readily.

American and Lesser Goldfinches

Then comes the smoke. Most birds don’t live that long, so they may be protected from longer-term ailments like lung cancer. But like children they breathe quickly, so are probably more prone to asthma and bronchial infections, and may suffer similarly with reduced lung, heart, and brain functions.

People try to cope. We don N95 masks, or pretend we’re too rugged or bully to need them. Homeowners negotiate with insurance companies. The Chamber of Commerce and the EDC advertise business relief loans.

Birdhouse In Burn

The feathered things cope more primitively. They fly. They cannot make complex plans, or contemplate next year, or the likelihood of more heat, or the reality that their homes and livelihoods are gone up in smoke, leaving skeletons of trees and dead ash on the ground that once sustained them; or consider the years and generations following, and how the hundreds of thousands of acres burned and the millions more wilting in heat and drought will change resources for food or housing or the animal joy of singing.

Birds don’t have the capacity to grasp or modify the underlying conditions that cause suffering—to address resources with a deliberate eye to health, wildlife, a sustainable economy, climate change, and general well-being. They can’t discern the world beyond their own visceral and short-term needs. The burning question is, can we?

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Eclipse of the Ducks

Mallard Drake in Eclipse Plumage

Mallard Drake in Eclipse Plumage

When most people hear the term “eclipse” they think lunar or solar. But those familiar with waterfowl understand the term might refer to the feathers, or plumage, of a duck or goose.

Mallard Female

Mallard Female

All birds molt, a process of dropping old feathers and growing new ones. The new feathers keep the birds in good shape for flying, keeping warm, and sometimes for breeding showiness. By the end of summer the bright feathers of spring might be difficult to recognize. Many birds molt in the fall to replace worn plumage, and then again in spring to acquire their most alluring outfits.

Mallard Pair

Mallard Pair in Breeding Plumage

But waterfowl—ducks and geese—choose their mates earlier than songbirds. Ducks usually pair up by late fall, and cannot wait until spring to dress up. Male ducks, in particular, have gorgeous plumage, but in late summer all the males seem to disappear. The Sacramento River gains a steady supply of feathers floating downstream, and no male ducks are to be seen. The beautiful shining green heads of mallards vanish. The ornate wood ducks and brilliant male mergansers can’t be seen anywhere. Suddenly there seem to be many female ducks along the river, but no colorful males of these common year-round species.

Mallard Drakes in Eclipse Plumage

Mallard Drakes in Eclipse Plumage

There’s a scientific reason. Most birds lose a few feathers at a time, replacing them piecemeal without seriously disrupting their lifestyle. But ducks shed all of their outer feathers when they molt, including their wing feathers. For a few weeks, they become flightless. Males acquire the same camouflage as the females, a useful protection while they cannot fly. An observer can distinguish a male mallard at this time only by his slightly larger body and large, yellow bill, in contrast to her orange and black bill. Males at this hapless stage tend to gather in small groups and skulk along shores with reeds and grasses, laying low until new flight feathers develop. After those new wing feathers grow back the males enter a second molt into their bright breeding plumage. The second molt is less severe, and the ducks retain their ability to fly and escape from predators. All of this happens in timely fashion—in the fall, just before the duck dating season opens.

Wood Duck Pair

Wood Duck Pair in Breeding Plumage

Female mallards, wood ducks, and mergansers are always attired in camouflage, so they only molt once—but again, it is in time to have fresh feathers for understated attractiveness when the males come looking.

Geese also molt in the fall, but they usually mate for life, and seem to dress for long-term health and beauty rather than for just a brief courting period. They do not molt all their wing feathers at once, so, although briefly disheveled, they retain the ability to fly.

Wood Duck Drake Preening

Wood Duck Drake Preening

Ducks and geese can often be seen preening their new feathers. They have oil glands on their rumps, which supply the waterproofing that they spread over their sleek contour feathers. The feathers have small barbs that lock their parts together, and combing them helps keep the birds smooth, warm, and attractive. Waterfowl instinctively know how important their feathers are, and do the work to maintain them.

Wood Duck Pair in Eclipse Plumage

Wood Duck Pair in Eclipse Plumage

Webster defines “eclipse” as to obscure, leave out or fail. He discusses the partial or total obscuring of one celestial body by another, making one seem less brilliant, but he makes no mention of the less brilliant plumage of male ducks in the fall. Ornithologists, however, have studied the annual phenomenon extensively. Eclipse plumage allows ducks to quickly molt into fresh breeding feathers. Understanding it solves the mystery of the disappearance of the male ducks.

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