Cell towers - Vultures - HD Stock Video - Birds - Stock Footage
Fun Footage Facts:
A cell site is a term used primarily in North America for a site where antennas and electronic communications equipment are placed on a radio mast or tower to create a cell in a cellular network. A cell site is composed of a tower or other elevated structure for mounting antennas, and one or more sets of transmitter/receivers transceivers, digital signal processors, control electronics, a GPS receiver for timing (for CDMA2000 or IS-95 systems), regular and backup electrical power sources, and sheltering.[1]
A synonym for "cell site" is "cell tower", although many cell site antennas are mounted on buildings rather than as towers. In GSM networks, the technically correct term is Base Transceiver Station (BTS), and colloquial British English synonyms are "mobile phone mast" or "base station". The term "base station site" might better reflect the increasing co-location of multiple mobile operators, and therefore multiple base stations, at a single site. Depending on an operator's technology, even a site hosting just a single mobile operator may house multiple base stations, each to serve a different air interface technology (CDMA or GSM, for example). Preserved treescapes can often hide cell towers inside an artificial tree or preserved tree. These installations are generally referred to as concealed cell sites or stealth cell sites.
The Black Vulture, Coragyps atratus, also known as the American Black Vulture, is a bird in the New World vulture family whose range extends from the southeastern United States to Central Chile and Uruguay in South America. Although a common and widespread species, it has a somewhat more restricted distribution than its compatriot, the Turkey Vulture, which breeds well into Canada and south to Tierra del Fuego. Despite the similar name and appearance, this species is unrelated to the Eurasian Black Vulture. The latter species is an Old World vulture in the family Accipitridae (which includes eagles, hawks, kites and harriers), whereas the American species is a New World vulture. It is the only extant member of the genus Coragyps, which is in the family Cathartidae. It inhabits relatively open areas which provide scattered forests or shrublands.[1] With a wingspan of 1.5 m (5 ft) the Black Vulture is a large bird though relatively small for a vulture. It has black plumage, a featherless, grayish-black head and neck, and a short, hooked beak.
The Black Vulture is a scavenger and feeds on carrion, but will also eat eggs or kill newborn animals. In areas populated by humans, it also feeds at garbage dumps. It finds its meals either by using its keen eyesight or by following other (New World) vultures, which possess a keen sense of smell. Lacking a syrinx—the vocal organ of birds—its only vocalizations are grunts or low hisses.[2] It lays its eggs in caves or hollow trees or on the bare ground, and generally raises two chicks each year, which it feeds by regurgitation. In the United States, the vulture receives legal protection under the Migratory Bird Treaty Act of 1918.[3] This vulture also appeared in Mayan codices.
Footage facts found on wikipedia
Posted by HD Stock Footage Online at 2/11/2010 2:14 AM 
Categories: Birds - Cell Towers
Tags: hd Cell Tower blue sky Stock Videos nesting Birds Vultures stock footage Hi-Def Express buzzards
Categories: Birds - Cell Towers
Tags: hd Cell Tower blue sky Stock Videos nesting Birds Vultures stock footage Hi-Def Express buzzards
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