#Climatechange could threaten monarch mass migration
#Mexico’s suitable #monarchbutterfly overwintering habitat could shift south as climate changes in decades to come, researchers report in PLOS #Climate. That could lengthen an already arduous journey and increase the energy required to make the trip. That extra distance might push some individuals to stay in Mexico instead of continuing north, says Carolina Ureta, biologist at National Autonomous University of Mexico.
https://www.sciencenews.org/article/monarch-butterfly-migration-climate