Welcome to the monarch library! Our goal is to include all peer-reviewed articles on monarch biology with links to sites that will give you the easiest direct access to each article. Please contact if you 1) know of an article not included, 2) find a mistake in any of the listed articles, 3) know of a better link to access an article. Thanks! With your help we can provide the most complete, informative access to all papers on monarch biology.

Field Definitions

First author: Last name of the first author
Type: Article or book chapter
Year: Publication year
Source: Journal or book
Category*: Broad scope of the publication.
Research topic (monarch & supporting research only)*: Specific topic.
Geographic focus*: Geographic setting for field studies.
Monitoring data used: Data from monitoring or public data efforts.
* Full list

5 result(s)
Category: Population dynamics
Type: Article
Year: 2016
Inamine H, Ellner SP, Springer JP, Agrawal AA. Linking the continental migratory cycle of the monarch butterfly to understand its population decline. Oikos. 2016 Apr 1.

Category: Monarch research, Population dynamics
Type: Article
Year: 2012
Davis AK. 2012. Are migratory monarchs really declining in eastern North America? Examining evidence from two fall census programs. Insect Conservation and Diversity 5: 101-105.

Category: Monarch research, Population dynamics
Type: Article
Year: 2006
Gibbs D, Walton R, Brower L, Davis AK. 2006. Monarch butterfly (Lepidoptera : Nymphalidae) migration monitoring at Chincoteague, Virginia and Cape May, New Jersey: A comparison of long-term trends. Journal of the Kansas Entomological Society 79: 156-164.

Category: Monarch research, Population dynamics
Type: Article
Year: 2005
Walton RK, Brower LP, Andrew AK. 2005. Long-term monitoring and fall migration patterns of the monarch butterfly in Cape May, New Jersey. Annals of the Entomological Society of America 98: 682-689.

Category: Monarch research, Migration
Type: Article
Year: 1996
Walton RK, Brower LP. 1996. Monitoring the fall migration of the monarch butterfly Danaus plexippus L. (Nymphalidae: Danainae) in eastern North America: 1991- 1994. Journal of the Lepidopterists' Society 50: 1.

This database is a work in progress and is likely to contain several omissions and mistakes.
Please contact with any additions or corrections.