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  Indian J Med Microbiol
 

Figure 1: An image of a semi-natural enclosure used in OPA experiments. Each enclosure is ~30 m2 and contains six territories that are divided by wire mesh that is easily climbed but adds spatial complexity. The four optimal territories have the large blue bins, which contain multiple dark nesting sites and are defendable. The two suboptimal territories consist of light exposed nesting sites. Each territory contains food within the chimney-like structures and water (poultry waterers). PIT tag antennas are placed above each feeding site. Photograph courtesy Douglas Cornwall

Figure 1: An image of a semi-natural enclosure used in OPA experiments. Each enclosure is ~30 m2 and contains six territories that are divided by wire mesh that is easily climbed but adds spatial complexity. The four optimal territories have the large blue bins, which contain multiple dark nesting sites and are defendable. The two suboptimal territories consist of light exposed nesting sites. Each territory contains food within the chimney-like structures and water (poultry waterers). PIT tag antennas are placed above each feeding site. Photograph courtesy Douglas Cornwall