Q.coconut fiber planters
We have coconut fiber planters on our balcony; the birds have picked them apart. Is there something we can do to prevent this? This is the second year we have used the same planters. They stayed in place over the winter. Since we re-planted them in early spring (mid-April) with pansies, they are deteriorating by the week because of the birds. We would like to replace the pansies with geraniums for the summer, but wonder if we can continue to use them in their weakened condition.

Birds are always searching for material to feather their nests.
The article below has some ideas for deterring the birds from your plants.
https://www.gardeningknowhow.com/plant-problems/pests/animals/birds-in-hanging-baskets.htm