The Environmental Husbandry Manual
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Individual Methods for Enclosure Design
Multi-Tiered Pools

The methods outlined in this section relate to features of enclosure construction and layout which may be used to enhance the living conditions of animals, including the use of shelter areas, vegetation, viewing platforms and climbing structures.

Multi-Tiered Pools
Method Split level enclosures allowing several pools, with water draining from the highest into the lowest level, and pumped back to the top.
Species Water Birds.
Purpose To provide a large area of aerated water that can be used for several linked enclosures.
Pro Keeps water moving, and allows large water surface area without an excessive depth on uneven or hilly ground.
Con Must drain to remove leaves in autumn. During summer, algal bloom can be a problem. Spread of disease or chemical contamination is a risk with multi-enclosure pool.
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