They - enough of them - will adapt.
The genetic ability to adapt (built into LIFE) and the LIFE urge to survive is the rock bed of evolution. Evolution minus a changing world is a non sequitur.
Moment of silence ... RIP. They had a good run ...
Haven’t they survived Antarctica being bare rock, for the most part? I wonder if their migration from rookery to open water was necessitated by the advance of the ice sheet.