Amphibian Egg Mass Surveys 2026

****CLICK HERE TO REGISTER****

What are AEMS?

In these surveys, we document floating masses of amphibian eggs in various wetland habitats on the Refuge. Amphibians are an important indicator of ecosystem health, and these surveys provide valuable information about our amphibian populations! Surveys involve wading (in waders) and spending several hours out of doors in winter weather with a small team on different Refuge properties. They are led by Friends or Refuge staff and are a fun opportunity to see the Refuge in a new way and contribute to important monitoring efforts. Due to the strenuous native of surveys, they are open to participants 13+. Minors should be accompanied by a parent or guardian, although you can reach out to me directly for an exception. 

When do AEMS take place?

Amphibian egg mass surveys take place in February and March, on Tuesdays, Wednesdays, and Fridays. Surveys are scheduled for three hours, 9am - 12pm or 12pm - 3pm. You can select one or more shifts that work for your schedule in the registration form. 

What is required to participate?

The refuge provides all equipment needed, so you'll just need to bring warm winter clothes, snacks, and water. Participants must also watch an online training video that takes approximately 40 minutes before their first survey (even if you have participated in the past, we ask that you review the video). You'll also need transportation to the survey location at Wapato Lake or Tualatin River National Wildlife Refuge. On request, I can help you connect with other participants to carpool. 

Click here to view the online training

Questions? Contact bethany_llewellyn@fws.gov