I've posted about this strange situation before.
This is a man-made mini lake. This hole in the ice exists because there is an underwater current maintained by the administrators of this park to keep the water from stagnating.
These ducks SHOULD have migrated.
It is not natural nor healthy for them to be here.
And here is the source of the problem.
These ducks only stay here because they are being fed.
Even though signs around the park
ask/tell/explain to people why they should
feed the ducks,
they continue to feed them.
Bags of food.
Yesterday I heard a woman explaining to some passersby that "these poor ducks would die if it weren't for her daily feedings."
The number of ducks have increased from about 25 in the fall to almost 150 now.
Every time they hear footsteps coming, they jump from the ice and dive into the water, rushing to be fed.
What a shame.