Set # 96
Leucism (/ˈluːsɪzəm, -kɪz-/) is a term used to describe a wide variety of conditions which result in the partial loss of pigmentation in an animal—which causes white, pale, or patchy coloration of the skin, hair, feathers, scales or cuticles, but not the eyes. It is occasionally spelled leukism. Some genetic conditions that result in a “leucistic” appearance include piebaldism,Waardenburg syndrome, vitiligo, Chédiak–Higashi syndrome, and Melanophilin mutations. Pale patches of skin, feathers, or fur (often referred to as “depigmentation”) can also result from injury. As the term “leucism” is used to refer to conditions with a very wide range of unrelated causes it can not be considered to be a single, specific condition.
© HJ Ruiz – Avian101
Set # 97
The field sparrow is distributed across eastern Canada and the eastern United States, with northern populations migrating southwards to southern United States and Mexico in the fall. The typical habitat of this bird is bushy country with shrubs and grassland. The nest is a cup-shaped construction built on the ground and hidden beneath a bush or clump of grass. The birds forage on the ground or in low vegetation, feeding mainly on seeds and insects.
Their breeding habitat is wet thickets or shrubby bogs across Canada, Alaska, and the northeastern and western United States; this bird is less common in the eastern parts of its range. The nest is a well-concealed shallow open cup on the ground under vegetation.
These birds migrate to the southern United States, Mexico, and northern Central America; they are passage migrants over much of…
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Set # 99
House Finch (M)
House finches forage on the ground or in vegetation normally. They primarily eat grains, seeds and berries, being voracious consumers of weed seeds such as nettle and dandelion; included are incidental small insects such as aphids. They are frequent visitors to bird feeders throughout the year, particularly if stocked with sunflower or nyjer seed, and will congregate at hanging nyjer sock feeders. The house finch is known to damage orchard fruit and consume commercially grown grain, but is generally considered an annoyance rather than a significant pest.
Juveniles often have pale streaks and may even be mistaken for vesper sparrows (Pooecetes gramineus) until they acquire adult plumage at 2 to 3 months. But junco fledglings’ heads are generally quite uniform in color already, and initially their bills still have conspicuous yellowish edges to the gape…
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Set # 27 – (Local Birds)
Our weather continues to be crazy. We’ve been getting frost in the morning for the past few days, but, later it warms up enough to be comfortable with a long sleeve shirt. The cold morning doesn’t deter birds from coming to the feeders. They are always hungry!