Concepts

Quantitative measure of acoustic similarity between sounds, ranging from 0 to 1.0 with higher correlations indicating more similar sounds

Percentage of nest area hidden from predators when viewed from directly above, measured using gridded circle

Standardized method for observing and counting birds at fixed locations for specified time periods

Behavioral activity of birds when captured in traps, measured as activity index from feeding to high distress behaviors

The physical arrangement and composition of vegetation including coverage of different plant types, heights, and density