A swan and ducks

In the garden of a hotel, we could afford
a black, beautiful swan in a fenced-in lake
to protect from entering.
It was a murderous bird; it dragged dogs
underwater and drowned them.
It was noticed the swan liked to **** dogs
with German names, swans do not speak
so, whether it was contra or pro political
was for humans to find out.
The swan go more and more aggressive
and no one thought of the obvious reason
it needed a mate.
When the penny dropped, the swan had
been sent to a zoo, found a mate many eggs
were laid swanlings everywhere
in the pond of the hotel, they have ducks
but they are so common.
Just momentarily thought there are so many
knife-wielding young men in London
could the reason be the lack of love?