Detection Rates
|
The easternmost part of the area is covered with emergent vegetation and not all birds are detectable. The noise of the airboat flushes many birds, but it is likely that many hide in the vegetation. Further west visibility is good, but it can be difficult to separate flocks for counting when the airboat causes birds to flush, blending in with other groups farther down the route. Also, flock sizes can be very large and the viewing perspective from the airboat when birds are clumped on the ground isn’t as favorable as an aerial view might be. Accordingly, counts may be skewed. |