Saturday, November 2, 2013

White Ibis


There in the foreground is a great looking snowy egret while in the background is a magnificent white ibis. A wading bird of the deep South, the striking White Ibis is frequently seen on lawns looking for large insects as well as probing for prey along the shoreline.

White Ibis Range Map

Saturday, October 19, 2013

Red-shouldered Hawk


This was a very good find for us. We didn't have the best view of the raptor but we were able to make a very clear recording of its call and during our cross reference of know hawk calls, we were able to determine it was a Red ShoulderedHawk. Whether wheeling over a swamp forest or whistling plaintively from a riverine park, a Red-shouldered Hawk is typically a sign of tall woods and water. It’s one of our most distinctively marked common hawks, with barred reddish-peachy underparts and a strongly banded tail. In flight, translucent crescents near the wingtips help to identify the species at a distance. These forest hawks hunt prey ranging from mice to frogs and snakes.

Although the American Crow often mobs the Red-shouldered Hawk, sometimes the relationship is not so one-sided. They may chase each other and try to steal food from each other. They may also both attack a Great Horned Owl and join forces to chase the owl out of the hawk's territory. The Great Horned Owl often takes nestling Red-shouldered Hawks, but the hawk occasionally turns the tables. While a Red-shouldered Hawk was observed chasing a Great Horned Owl, its mate took a young owl out of its nest and ate it. Red-shouldered Hawks return to the same nesting territory year after year. One Red-shouldered Hawk occupied a territory in southern California for 16 consecutive years. By the time they are five days old, nestling Red-shouldered Hawks can shoot their feces over the edge of their nest. Bird poop on the ground is a sign of an active nest.

Red-shouldered Hawk Range Map

Sunday, October 13, 2013

Snowy Egret


Among the most elegant of the herons, the slender Snowy Egret sets off immaculate white plumage with black legs and brilliant yellow feet. Those feet seem to play a role in stirring up or herding small aquatic animals as the egret forages. Breeding Snowy Egrets grow filmy, curving plumes that once fetched astronomical prices in the fashion industry, endangering the species. Early conservationists rallied to protect egrets by the early twentieth century, and this species is once again a common sight in shallow coastal wetlands.

During the breeding season, adult Snowy Egrets develop long, wispy feathers on their backs, necks, and heads. In 1886 these plumes were valued at $32 per ounce, which was twice the price of gold at the time. Plume-hunting for the fashion industry killed many Snowy Egrets and other birds until reforms were passed in the early twentieth century. The recovery of shorebird populations through the work of concerned citizens was an early triumph and helped give birth to the conservation movement. Adult Snowy Egrets have greenish-yellow feet for most of the year, but at the height of the breeding season their feet take on a much richer, orange-yellow hue. The bare skin on their face also changes color, from yellow to reddish. Snowy Egrets sometimes mate with other heron species and produce hybrid offspring. They have been known to hybridize with Tricolored Herons, Little Blue Herons, and Cattle Egrets.

Snowy Egret Range Map

Clapper Rail


The large Clapper Rail is abundant in saltwater marshes and mangrove swamps from Massachusetts to South America. This one was witnessed in the salt marshes of Dauphin Island.
 
Clapper Rail Range Map

Downy Woodpecker


In winter Downy Woodpeckers are frequent members of mixed species flocks. Advantages of flocking include having to spend less time watching out for predators and better luck finding food from having other birds around. Male and female Downy Woodpeckers divide up where they look for food in winter. Males feed more on small branches and weed stems, and females feed on larger branches and trunks. Males keep females from foraging in the more productive spots. When researchers have removed males from a woodlot, females have responded by feeding along smaller branches. Woodpeckers don’t sing songs, but they drum loudly against pieces of wood or metal to achieve the same effect. People sometimes think this drumming is part of the birds’ feeding habits, but it isn’t. In fact, feeding birds make surprisingly little noise even when they’re digging vigorously into wood.
Downy Woodpecker Range Map

Saturday, October 12, 2013

Belted Kingfisher


With its top-heavy physique, energetic flight, and piercing rattle, the Belted Kingfisher seems to have an air of self-importance as it patrols up and down rivers and shorelines. It nests in burrows along earthen banks and feeds almost entirely on aquatic prey, diving to catch fish and crayfish with its heavy, straight bill. These ragged-crested birds are a powdery blue-gray.

The Belted Kingfisher is one of the few bird species in which the female is more brightly colored than the male. Among the nearly 100 species of kingfishers, the sexes often look alike. In some species the male is more colorful, and in others the female is. During breeding season the Belted Kingfisher pair defends a territory against other kingfishers. A territory along a stream includes just the streambed and the vegetation along it, and averages 0.6 mile long. The nest burrow is usually in a dirt bank near water. The tunnel slopes upward from the entrance, perhaps to keep water from entering the nest. Tunnel length ranges from 1 to 8 feet. As nestlings, Belted Kingfishers have acidic stomachs that help them digest bones, fish scales, and arthropod shells. But by the time they leave the nest, their stomach chemistry apparently changes, and they begin regurgitating pellets which accumulate on the ground around fishing and roosting perches. Scientists can dissect these pellets to learn about the kingfisher’s diet without harming or even observing any wild birds.
Belted Kingfisher Range Map

House Wren


A plain brown bird with an effervescent voice, the House Wren is a common backyard bird over nearly the entire Western Hemisphere. Listen for its rush-and-jumble song in summer and you’ll find this species zipping through shrubs and low tree branches, snatching at insects.

The House Wren has one of the largest ranges of any songbird in the New World. It breeds from Canada through the West Indies and Central America, southward to the southernmost point of South America. House Wrens nest inside tree holes and nest boxes. As the season progresses their nests can become infested with mites and other parasites that feed on the wren nestlings. Perhaps to fight this problem, wrens often add spider egg sacs into the materials they build their nests from. In lab studies, once the spiders hatched, they helped the wrens by devouring the nest parasites. A House Wren weighs about as much as two quarters
House Wren Range Map