Archive | April, 2018

It’s Parenting Season

Black-headed Grosbeak Male

Black-headed Grosbeak Male

It’s spring, and the busier the birds and bees are, the better it is for all of us. Part of that busy-ness has to be raising offspring.

Birds take on rearing their children with all the variety and flair of feathers. Many young birds are brought up in two-parent nests; others just by mom, some just by dad; some are raised by foster parents; still others are grouped into “it takes a village” scenarios. There are numerous child-rearing styles. But no young bird prospers without substantial parenting in some form.

Black-headed Grosbeak Male Feeding Young

Black-headed Grosbeak Male Feeding Young

Billions of aspiring avian moms and dads are in this child-raising season right now. Most songbird pairs share their nesting duties. Typically, the female incubates and turns the eggs, and quietly chirps to the young, who learn her voice before they hatch. Males in some species spell their mates on the nest, but more often do guard duty, dive-bombing or distracting predators. Both parents feed the hatchlings, hunting down hundreds of insects and making scores of feeding visits to the nest every day. When the fledglings take wing, the male often shepherds them, while mom perhaps begins a second or even third nest.

Black-headed Grosbeak Female

Black-headed Grosbeak Female

Black-headed grosbeaks, colorful, big-billed birds, take the sharing of nest duties a notch or two farther than most species. When a dangerous jay or neighborhood cat approaches, the female readily joins her mate in harassing the predator, attempting to drive it from their vulnerable young. On his part, the male, with rare egalitarianism, undertakes an even share of egg incubation and nestling-warming. More noisily than his mate, he nests with what seems foolhardy flair; he sings loudly right from the nest, as if he can’t contain his proud papa-hood.

Black-headed Grosbeak Juvenile

Black-headed Grosbeak Juvenile

Unike the precocial ready-to-go chicks of turkeys, ducks and quail, hatchling grosbeaks are altricial—blind, naked, and helpless. Within two weeks, however, under their parents’ relentless feeding and guardianship, the babies are full grown and feathered, ready to try their wings.

Like so many of our nesting birds, grosbeaks are travelers, wintering in Mexico and nesting as far north as British Columbia. Like robins, they have adapted effectively to suburbs and parks. They prefer to nest near water where both trees and brush offer cover. The females weave loose nests, usually on outer branches no higher than a second story window. Both the male and female sing profusely, a tune and tone frequently likened to that of a tipsy robin. His song is especially loud and clear, waltzing through the woods any time of day.

These singers of the American West dine on seeds, insects, and fruit, happily foraging high above us mere walklings. They are, however, happy to descend to our level to empty our feeders of sunflower seeds. There we can enjoy their burnt orange plumage and oddly hefty bills.

0

Anna’s, Rufous and Calliope: Hummingbirds of the West

Calliope Hummingbird Male

Here in Northern California I am fortunate to have at least three of the western hummingbirds of North America visiting my yard. The least common species of hummingbird I see here is the Calliope Hummingbird (Stellula calliope)(click on photos for full sized images).

Calliope Hummingbird Male

The smallest of the North American hummingbirds at just 3 1/4 inches, and with wings extending beyond its short tail, the Calliope Hummingbird is usually distinguishable from its larger counterparts by size alone. This is a photo of a male Calliope Hummingbird on the feeder next to the much larger male Anna’s Hummingbird.

Calliope Hummingbird and Anna's Hummingbird Male

Because of its shorter wing length, the Calliope also has faster wingbeats, making it sound more like a bumble bee. This also sets it apart from the larger hummers.

The male also has a unique gorget among North American hummingbirds. His iridescent gorget is divided into separate magenta-red rays, which can be elevated in an elegant star-burst display against the white background of his throat. This photo by Wally Rufous is the best photo I have ever seen of this phenomenon!

Calliope Hummingbird Male

Calliope Hummingbird Male Courtship Display courtesy Wally Rufous

This beauty is the female Calliope Hummingbird, she looks similar to the female Rufous Hummingbird (Selasphorus rufus) but she has dark and pale spots in front of her eye and a weak pale line over the base of her bill. She is the latest of our local breeders, not nesting usually until mid-May.

Calliope Hummingbird Female

The female Rufous Hummingbird has more rufous in her flanks and often has a few patchy orange-red feathers on her throat. She will begin breeding in April.

Rufous Hummingbird Female

The male is the only hummingbird in North America with a rufous back.

Rufous Hummingbird Male

He also sports a brilliant orange-red gorget.

Rufous Hummingbird Male

Enjoy this close-up look at this guy preening.

The most common hummingbird seen in my neck of the woods is Anna’s Hummingbird (Calypte anna). The male is the only North American hummer with both a rose red crown and gorget.

Anna's Hummingbird Male

The female is the earliest breeder of all these species, arriving on breeding grounds shortly after the males in November. Here you can see the female collecting nesting material.

Anna's Hummingbird Female

The ability to take advantage of both nectar and insects allows Anna’s Hummingbirds to avoid competition from other hummingbirds by nesting in the winter. This is a photo of the female Anna’s Hummingbird in her nest.

Anna's Hummingbird Female on Nest

The male Anna’s can be heard for quite a long way when performing his courtship display known as the “dive display” discussed in one of my previous posts.

Anna's Hummingbird Male

If you haven’t seen a hover of hummingbirds around a feeder before, you may want to watch this video I filmed off my back porch. These little “jewels of the sky” are a blast to watch!

0