The Migrating Monareh (Memorial) Highway.

The article titled "The Migrating Monarch (Memorial) Highway" discusses the incredible journey of monarch butterflies from Canada to Mexico. The author highlights the disparity between the northward and southward migrations and explores the reasons behind it. The article also mentions the impact of a microscopic protozoan called Ophryocystis elekroscirrha on the monarch population. Despite this parasite, the monarch butterflies continue their magnificent migration each year. [Extracted from the article]