Robin was Just thinking how beautiful it all was, when the danger
for which the drake was watching in the sky suddenly came from the
water beneath.

One of the downy yellow dabs had swum two yards away from the
others and his mother, after a daddy long-legs which had flown down
on to the surface of the water, and had opened its little flat beak
to seize it, when there was a whirl in the water, a rush and
splash, and two great jaws armed with sharp teeth closed over the
duckling, which was visible one moment, gone the next, and Robin
drew an arrow out to fit to his bow-string.

But he was too late to send it whizzing at the great pike, which
had given a whisk with its tail and gone off to some lair in the
reeds to peacefully swallow the young duck, while the rest followed
their quacking father and mother back to the shelter of the reeds,
rushes, and sedge, where the moor-hen and her brood were already
safe, while, startled by the alarm, the heron bent down as it
spread its great gray wing's, sprang up, gave a few flaps and
flops, and began to sail round above the pool till it grew peaceful
again, when, stretching out its legs, the heron dropped back into
the water, stood motionless gazing down with meditative eyes as if
quite satisfied that no fish would touch it, and then, _flick_!

It had taken place so rapidly that Robin hardly saw the movement,
but certainly the heron's beak was darted in amongst the bottoms of
the reeds where they grew out of the water, and directly afterwards
the bird straightened itself again, to stand up with a kicking
green frog in its scissor-shaped beak.