The distributions of many species are dynamic in space and time, and movements made by
individuals range from regular and predictable migrations to erratic, resource‐driven …

Myriad tiny insect species take to the air to engage in windborne migration, but entomology
also has its 'charismatic megafauna'of butterflies, large moths, dragonflies and locusts. The …

Insect populations including butterflies are declining worldwide, and they are becoming an
urgent conservation priority in many regions. Understanding which butterfly species migrate …

To understand modern principles of sustainable management and the conservation of
wildlife species requires intimate knowledge about demography, animal behavior, and …

Threats to migratory animals can occur at multiple periods of the annual cycle that are
separated by thousands of kilometres and span international borders. Populations of the …

Natural‐abundance stable isotope ratios provide a wealth of ecological information relating
to food web structure, trophic level, and location. The correct interpretation of stable isotope …

The eastern migratory population of monarch butterflies (Danaus plexippus plexippus) has
declined by> 80% within the last two decades. One possible cause of this decline is the loss …

Sulfur isotope composition of organic tissues is a commonly used tool for gathering
information about provenance and diet in archaeology and paleoecology. However, the lack …

Every fall, millions of North American monarch butterflies undergo a stunning long-distance
migration to reach their overwintering grounds in Mexico. Migration allows the butterflies to …

Stable isotope applications have evolved from simple characterizations of isotope
composition in organisms and organic matter, to highly complex methodologies on scales …