shorebird

Wilson’s Snipe

Wilson’s Snipe (Gallinago delicata) is a medium-sized pudgy shorebird with short, stocky legs. The bill is very straight and very long. The head is round, and the tail is short. They measure 10.6-12.6 inches with a wingspan of 16.1-17.3 inches, weighing 2.8-5.2 oz. Wilson’s Snipe are intricately patterned in buff and brown stripes and bars. The dark head has prominent buffy to whiteish stripes. There are three long buffy streaks along their dark backs. The chest is streaked and spotted with brown; the sides are heavily barred with black. In flight, the wings are dark above and below. Wilson’s Snipe has an extremely large range from Canada to the United States through Central America to Venezuela. Florida makes up their nonbreeding range.
This shorebird can be found in all types of marshy settings. They avoid areas with tall, dense vegetation, but they do need small areas that have cover to hide in and to provide a safe lookout for predators. Wilson’s Snipe diet mainly consists of insect larvae, including flies such as crane, horse, and deer flies as well as beetles, dragonflies, crickets, grasshoppers, ants, mayflies, butterflies, caddis flies, and moths. Other invertebrates include snails, crustaceans, and worms. Small vertebrates which include lizards, frogs, fish, and nestlings are occasionally eaten with plant materials making up a tiny part of their diet. Their flexible bills are used to probe for food in the wet soil, food is grasped by the tip of the bill while the base remains closed, and they can slurp up the food without removing their bill from the wet soil. The Wilson’s Snipe eyes are set far back on its head that they can almost as well behind as in front and to the sides. This makes it difficult for potential predators to sneak up on them. The term “has eyes in the back of its head” can be used for Wilson’s Snipe!
According to the North American Breeding Bird Survey, this species’ population is widespread and stable making them a low conservation concern. However, the draining or conversion of wetland habitat is detrimental to this species. There are still threats such as collisions with lighthouses, radio, TV, cell towers, buildings, and cars.
Photo Credit: Lynn Marie
Author: Destiny Alvarez – Fisheries and Wildlife Sciences, University of Oregon
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Killdeer

Killdeer (Charadrius vociferus) is a shorebird that is about the size of a robin measuring 7.9-11.0 inches with a wingspan of 18.1-18.9 inches; they weigh about 2.6-4.5 oz. The Killdeer has a round head with large eyes and a short bill. Their plumage is brownish-tan on top and white on the bottom; two black bands are on the white chest. Their brown face I marked with black and white patches. The Killdeer get their name from the shrill, wailing kill-deer call they give. These birds have an extremely wide range from Canada to the United States and Pacific Coast. Some of the northern populations do migrate to Mexico in the winter. The populations in the southern United States and Pacific Coast are year-round residents.
Killdeer spend most of their time walking along the ground or running ahead a few steps before stopping to look around and then running on again. They will quickly take flight when disturbed, circling overhead and calling repeatedly. These birds can be found on open ground with low vegetation such as lawns, driveways, gravel-covered roofs, pastures, fields, sandbars, and mudflats. Compared to other shorebirds they do not only stay close to the water as they are also common in dry areas.
They will search for insects and earthworms by running and stopping to look around. Invertebrates are what primarily make up their diet. Invertebrates include earthworms, snails, crayfish, grasshoppers, beetles, and aquatic insect larvae, they will also eat seeds left in agricultural lands. As an opportunistic forager, Killdeer has been seen hunting frogs and eating dead minnows.
Their nest is a shallow depression on the ground, After egg-laying begins, Killdeer will often add rocks, bits of shell, sticks, and trash to the nest. The clutch size will typically be 3-6 eggs, though the number of broods will be 1-3, and the incubation period is at 22-28 days. Eggs are buff-colored and heavily marked with blackish brown. Chicks have a full coat of buffy down feathers and a single black breast band, they can walk out of the nest as soon as their feathers dry. To protect the nest, the parents will distract predators by calling loudly, bobbing, and running away. Another method that is used to lure predators away is the broken-wing display by feigning injury.
The Killdeer is a species that is of relatively low conservation concern. They are among the most successful of all shorebirds because of their fondness for human-modified habitats and willingness to nest close to people. However, because they live close to people, Killdeer are vulnerable to pesticide positioning and collisions with cars and buildings.
Photo Credit: Dan Kon
Author: Destiny Alvarez – Fisheries and Wildlife Sciences, University of Oregon
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