Round about this time of year T.S. Eliot's phrase, "April is the
cruelest month, breeding / Lilacs out of the dead land" gets bandied
about a lot, although on Mount Desert Island we don't see lilac blossoms until late
May. For us, April breeds Wood Frogs and Spotted Salamanders. I haven't seen a salamander in years, but I'm pretty sure these are their eggs:
and here is a Wood Frog with masses of frog eggs:
I don't know how old the eggs are, but the embyos are just starting to elongate into vaguely tadpole-like shapes.
The photo at the top of this post shows the eggs against a white
background so you can see the babies more clearly. We scooped an egg mass into a glass baking dish full of pond
water and held it over white fabric. (These were eggs that the
neighborhood kids had brought home in a bucket - I believe it is best not to
detach frog eggs from any grass or twigs supporting them.) I'll try to get another shot in a few days when the tadpoles have started to develop.