Backyard Bats: Bat/Hummingbird Feeder Study

Volunteers are needed for a hummingbird feeder monitoring study. Participation by households throughout southern Arizona is encouraged to determine the presence of lesser long-nosed bats. It’s easy and interesting to volunteer on this citizen science project!

Lesser long-nosed bats

How to participate

  • Monitor your feeder at least once per week, measuring the level of fluid in the feeder just before it gets dark and again in the early morning.
  • Input your data on this website using the “Weekly Data Input Form” below. We will also ask you to fill out the “End of Season Summary Form” one time in the winter when the bats have begun their migration and stopped visiting your feeder.
  • Additional information and detailed instructions can be found in the links below.

study participation

Instructions and Information

Weekly Data Input Form

End of Season Summary Form

Lesser long-nosed bat

AZGFD Species Account

Arizona-Sonora Desert Museum Species Information

Bat Conservation International Species Information

U.S. Fish and Wildlife Service Lesser Long-Nosed Bat Recovery Plan

2018 U.S. Fish and Wildlife News Release – Lesser Long-nosed Bat Has Recovered

2018 U.S. Fish and Wildlife – Lesser Long-nosed Bat Delisting Q&A

Select study results

“Free” Food: Nectar Bats at Hummingbird Feeders in Southern Arizona

A Brief Summary of What We’ve Learned: 2014

A Brief Summary of What We’ve Learned: 2010

2007-2008 LLNB Urban Movement Report

In the media

Arizona Daily Star 2017: No Species is an Island

Bat Conservation International 2012: Midnight Raiders


Living with Bats

AZGFD Volunteer Program 

National Phenology Network Flowers for Bats


Emily Scobie, Arizona Game & Fish Department, 

Scott Richardson, US Fish & Wildlife Service, 

Ted Fleming, Emeritus Professor, 

Angie McIntire, Statewide Bat Lead, Arizona Game & Fish Department,

Want to Get Involved with Wildlife Conservation?

Volunteer your time, or donate to help us with conserving and protecting our wildlife. When you purchase a hunting or fishing license online, resources go back into wildlife conservation.

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With your help, we can continue to conserve & protect Arizona’s wildlife.


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If you have a passion for wildlife and want to help us conserve and protect it, we’d love to have you on our team!

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