Frogs Croak, then Frogs to Be
Get Leica S and Leica 100mm f/2 Summicron-S ASPH at B&H Photo.
In late June this particular large pond was deafening with croaking frogs.
A month later, the next generation abounds. These tadpoles are about two inches long, but there are other frog varieties at high altitude that are the size of pinky-finger thumbnail.

LEICA S (Typ 006) + Summicron-S 100 @ 100mm
[low-res image for bot]