Ideally we should find a replacement for that horseshoe crab blood or perhaps a way to raise them in captivity. Maybe someone could come up with something to give the crabs to offset the damage caused by taking the blood. The issue might not even be primarily due to the blood with everything else happening climate change wise.

There might be ways to improve things for the birds but animals with super specific niches just kinda run the risk of becoming extinct. I feel similar about Pandas and Koalas.