"From ferns that drop their tears"? Whose tears? Trout's tears or ferns' tears?

This is a rainbow trout, a freshwater fish. I don't know what kind of trout live in Scotland.

As you may have guessed, trout don't have ears... per-say, but this poems is fantasy. And if they did have ears, presumably the faeries could whisper in them.

Dew and raindrops that resemble tears.

From ferns that drop their tears
Over the young streams.

Thank you Ceili.
But you haven't answered my question - I asked "tears", not "ears":
Whose tears? Trout's tears or ferns' tears?
Context:

Ferns tears.

The dew dropping off the fern looked like tears.

Also, trout like running water, maybe a small waterfall or so. If there is mist or spray in the air, this could collect on the leaves/fronds and drops could be said to be falling "like tears".

The native trout of Scotland is the wild brown trout, slightly smaller than the rainbow trout. Quite a bit smaller actually, depending on how much feeding is available.
Rainbows in this country are usually artificially raised/fed.

Yes you did. Read above.
The ears of a trout.
The tears of a fern.
I thought the poem, the answer and the picture of a fern with raindrops/tears on it and them falling into water would self evident. I was wrong.
Can you not see the pictures?

I can see two beautiful pics but the last one.