50 C.F.R. § 22.3
In addition to the definitions contained in part 10 of this subchapter, and unless the context otherwise requires, in this part 22:
Alternate nest means one of potentially several nests within a nesting territory that is not an in-use nest at the current time. When there is no in-use nest, all nests in the territory are alternate nests.
Communal roost site means an area where eagles gather repeatedly in the course of a season and shelter overnight and sometimes during the day in the event of inclement weather.
Compatible with the preservation of the bald eagle or the golden eagle means consistent with the goals of maintaining stable or increasing breeding populations in all eagle management units and the persistence of local populations throughout the geographic range of each species.
Cumulative effects means the incremental environmental impact or effect of the proposed action, together with impacts of past, present, and reasonably foreseeable future actions.
Disturb means to agitate or bother a bald or golden eagle to a degree that causes, or is likely to cause, based on the best scientific information available, (1) injury to an eagle, (2) a decrease in its productivity, by substantially interfering with normal breeding, feeding, or sheltering behavior, or (3) nest abandonment, by substantially interfering with normal breeding, feeding, or sheltering behavior.
Eagle management unit (EMU) means a geographically bounded region within which permitted take is regulated to meet the management goal of maintaining stable or increasing breeding populations of bald or golden eagles.
Eagle nest means any assemblage of materials built, maintained, or used by bald eagles or golden eagles for the purpose of reproduction.
Export for the purpose of this part does not include the transportation of any dead bald or golden eagles, or their parts, nests, or dead eggs out of the United States when accompanied with a valid transportation permit.
Foraging area means an area where eagles regularly feed during one or more seasons.
In-use nest means a bald or golden eagle nest characterized by the presence of one or more eggs, dependent young, or adult eagles on the nest in the past 10 days during the breeding season.
Import for the purpose of this part does not include the transportation of any dead bald or golden eagles, or their parts, nests, or dead eggs into the United States when accompanied with a valid transportation permit.
Important eagle-use area means an eagle nest, foraging area, or communal roost site that eagles rely on for breeding, sheltering, or feeding, and the landscape features surrounding such nest, foraging area, or roost site that are essential for the continued viability of the site for breeding, feeding, or sheltering eagles.
Indirect effects means effects for which a proposed action is a cause, and which may occur later in time and/or be physically manifested beyond the initial impacts of the action, but are still reasonably likely to occur.
Local area population (LAP) means the bald or golden eagle population within the area of a human activity or project bounded by the natal dispersal distance for the respective species. The LAP is estimated using the average eagle density of the EMU or EMUs where the activity or project is located.
Necessary to ensure public health and safety means required to maintain society's well-being in matters of health and safety.
Nesting attempt means any activity by golden eagles involving egg laying and incubation as determined by the presence of an egg attended by an adult, an adult in incubation posture, or other evidence indicating recent use of a golden eagle nest for incubation of eggs or rearing of young.
Nesting territory means the area that contains one or more eagle nests within the home range of a mated pair of eagles, regardless of whether such nests were built by the current resident pair.
Person means an individual, corporation, partnership, trust, association, or any other private entity, or any officer, employee, agent, department, or instrumentality of any State or political subdivision of a State.
Practicable means available and capable of being done after taking into consideration existing technology, logistics, and cost in light of a mitigation measure's beneficial value to eagles and the activity's overall purpose, scope, and scale.
Resource development or recovery includes, but is not limited to, mining, timbering, extracting oil, natural gas and geothermal energy, construction of roads, dams, reservoirs, power plants, power transmission lines, and pipelines, as well as facilities and access routes essential to these operations, and reclamation following any of these operations.
Safety emergency means a situation that necessitates immediate action to alleviate a threat of bodily harm to humans or eagles.
Take means pursue, shoot, shoot at, poison, wound, kill, capture, trap, collect, destroy, molest, or disturb.
Transportation into or out of the United States for the purpose of this part means that the permitted item or items transported into or out of the United States do not change ownership at any time, they are not transferred from one person to another in the pursuit of gain or profit, and they are transported into or out of the United States for Indian religious purposes, or for scientific or exhibition purposes under the conditions and during the time period specified on a transportation permit for the items.
50 C.F.R. §22.3