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Archive | March, 2015

BirdWords: The Belted Kingfisher

By on March 27, 2015 in BirdWords

Belted Kingfisher Female

The Belted Kingfisher by Linda Aldrich

If you’ve ever heard a loud rattling call and seen a flash of blue and white splash into the water, you have spotted a Belted Kingfisher, one of the more interesting denizens of the waterways of our area.

Follow the flight of this bird to a perch above the water and you will see a 13 inch stocky, big-headed creature with a stout dark bill, shaggy topknot of feathers on its head, small feet and a relatively short tail. The male bird has a slate blue head, wings and tail. The breast is white and encircled with a blue band which is the belt that gives it its name. The female has all of those features plus a second rusty red belt and reddish flanks. In most birds with plumage differences between the sexes, the male is more colorful; however, Ms. Kingfisher is the one sporting the flashier feathers in this species.

The feet of the Belted Kingfisher and its kin are unusual, too. Like a chicken, three toes point forward and one points to the back; but, unlike other bird groups, the forward-facing toes are partly fused together at their bases – a characteristic that probably comes in handy in nesting season. Belted Kingfishers dig a tunnel in a vertical bank above water to raise their families in.

They start work by flying full tilt into the bank beak first, then kick loosened soil out behind them with their feet. Both male and female construct the tunnel which is usually 3 to 6 feet deep (although one ambitious pair tunneled for 15 feet). At the end of the tunnel, they hollow out a chamber in which the female lays 5 to 8 white eggs. Both parents participate in incubating the eggs for about 3 weeks and then feed the voracious chicks (each eats 8 fish a day) for 4 weeks until they exit the tunnel. In past years, a pair of Belted Kingfishers has nested in a bank above the Sacramento River visible across the river from Anderson River Park.

The Belted Kingfisher’s fishing behavior is fun to watch. One of these birds will sit on a branch over-hanging water until it sees a fish near the surface. It will splash into the water (stop-motion videos show its eyes closed) and grasp the hapless fish firmly with its stout bill. The kingfisher than flies to a near-by branch and “tenderizes” its catch by bashing it against the branch, finally swallowing it whole. Occasionally, the bird will hover above the water to spot and catch a fish.

Although the Belted Kingfisher is the only kingfisher in most of the United States, there are about 90 species worldwide. These include the smallest, the tiny 4 inch African Dwarf Kingfisher, a forest dweller that eats insects (in common with many non-fishing species) and the Giant Kingfisher of Africa which is an 18 inch sturdily-built lunker. Surprisingly, the famous Laughing Kookaburra of Australia is actually a kingfisher.

BirdWords: Beaver Dams Help Bird Habitat

By on March 24, 2015 in BirdWords

Beaver Dam

Article by Jeannette Carroll

Last October found the Sacramento River dropping lower and lower. The slough along Redding’s Cascade Park dropped to ankle-deep water. The ducks were gone. But wait, despite low Keswick Dam releases, residents along the slough noticed the water level begin to rise.

Puzzled, they followed the slough down to Cascade Park and discovered an amazing beaver dam more than 50 feet in length and 3 feet high, constructed of tree limbs and branches, twigs, grass and mud. Its height gradually increased to 4 or 5 feet. The dam survived December’s downpours and, even after our dry January, continues to hold water in a pond that extends over a quarter mile. The pond is well appreciated. Birds, like all creatures, need the right habitat. The Cascade beaver pond is creating a winter home for mallards, wigeons and other dabbling ducks. The dabblers are those who tilt bottoms-up to browse for pondweed, snails and underwater insects.

Along the pool’s edge, an egret patrols in its sharp-eyed hunt for fish, frogs,or just about any animal it can gulp down its long white neck. A steel-blue kingfisher rattles over the pond, taking advantage of the still water to spot its prey. Even a Barrow’s goldeneye, a diving duck typically found in the deeper river, has found a place to rest in the quiet pond.

Of course, any engineering project has costs, too. Without the dam, the slough would now be a riddle of exposed rocks. Shorebirds such as killdeer and yellowlegs, and also jays and sparrows, might pick for food in the trickles through those rocks. As it is, they will be confined to the drier habitat below the dam.

For people, beaver dams can be positive or negative, too. Fortunately, the Cascade pond is only wetting the slough, not posing a threat to area homes.

In the Midwest beavers are being reintroduced in some areas to hold water, a sort of substitute snowpack in the face of dry summers.

Beavers are native in Shasta County and throughout most of North America. Like the dipper, a bird of our mountain streams, they have an extra set of transparent eyelids that enables sight under water.

Beaver families form colonies and may have as many as eight members. Reaching maturity in three or four years, they breed in January or February, and usually have three or four kits. Because they are mainly nocturnal mammals, beavers are not often seen. Residents near Cascade Park have found a second dam on Olney Creek, but checking early and late, have not seen these great engineers at work. Still, they are out there, shaping habitat that some birds and people can enjoy.