Una wrote:

I like the herons fishing. A hidey hole for the fish will allow a few,
the smart ones, to survive heron predation for years. Just keep adding
fish. The more fish you put in there, the more smart fish you will end
up with.

and/or stock it with fish that
make plenty of small ones quickly
(mollies, guppies).

it's pretty unlikely the heron
will get them all.


songbird