Flock in Storm

This discrete Volterra-Lotka parameter space image looks like a flock of birds caught in bad weather.

Mathematically: the blue in top right lacks finite attractors, or their basins are thin and wispy; the grey "slats" at left are regions with limit circle attractors, with the narrower bands between the slats producing discrete cyclic attractors; the swirling grey in most of the rest of the image produces strange attractors; and the pale "birds", their shapes familiar from the forced logistic map and some other two-real-parameter fractals, are islands of stability with, again, discrete cycles.