City Cast Portland logo

How Bats Help the Environment

Posted on November 16, 2023   |   Updated on September 30, 2025
Natalia Aldana

Natalia Aldana

bat in the forest

What a fierce pose from the brown long-eared bat! Close friends also know them as plecotus auritus. (DEA / G. GALASSO / Contributor / Getty Images)

Do you know who saves the U.S. corn industry more than $1 billion a year in crop damage and pesticide costs? Bats, that’s who. These wonderful creatures have long had a bad reputation. So let’s set the record straight on their immense environmental contributions.

Bats are incredible hunters and use echolocation to hunt insects that feed on crops. They can eat up to 1,200 mosquitoes in an hour, including those that tend to spread viruses among humans. Their droppings are one of the richest fertilizers, and they’re such effective pollinators that many gardeners plant bat gardens or build bat boxes so they have a cozy place to rest and spread their wealth among the plants.

bat being held by white gloves

A silver-haired bat that was captured and released in Books Cliffs, Colorado. (Lyn Alweis/The Denver Post via Getty Images)

There are more than a thousand bat species in the world — and 15 of them are in Oregon. More than half of the species in the U.S. are in severe decline or endangered. Loss of habitat and the white-nose syndrome have decimated bats. Another major cause of their endangerment is misinformation about their importance. U.S. Fish & Wildlife Service lists several ways you can do your part to help bats, from minimizing the use of pesticides to building those bat boxes in your garden.

Also, I think they’re so fiercely cute. Need convincing? From the aptly named Townsend’s big-eared bat to the fiercely adorable pallid bat, check out this photo series from The Oregonian on your winged neighbors.

What Misunderstood Creature or Plant Should We Write About Next?

Share article

Hey Portland

Stay connected to City Cast Portland and get ready to join the local conversation.

Can't subscribe? Turn off your ad blocker and try again.

Urban Almanac

See All
Urban AlmanacMarch 3

3 Oregon Wildflowers To Check Out This Spring

There are blooms all around us in spring. But here are three local wildflowers to seek out on your next adventure in nature.

white bloom with three petals
Urban AlmanacApril 7, 2025

Climate Change Poses Threat to Northwest Fish

Climate change is likely to compel all kinds of species migration that could lead to increased predation, competition and some localized...

A spawning redband trout from the Upper Klamath Basin next to the logs
Urban AlmanacMarch 20, 2025

Go Whale Watching This Coming Week in Oregon

It’s time for Oregon’s spring Whale Watch Week — Saturday, March 22 to Sunday March 30. In late March, the gray whales begin migrating up...

woman with binoculars stands at a window with a desk looking out at the ocean, with pink sky
Urban AlmanacMarch 6, 2025

What To Forage in Portland

There’s some good news for anyone curious about foraging for food (and fun) in Portland yards and wilderness areas. Almost all local weed...

green plants against the side of house, Portland, Oregon
Urban AlmanacDecember 19, 2024

Why Cross-Country Skiing Is Portland’s Best Winter Sport

If you’re looking for a way to stay active in the winter, consider cross-country skiing at one of the many great spots around Portland. I...

three people on skis
Urban AlmanacDecember 12, 2024

The Remote Destination in Oregon Where the Drive Is Worth the Final View

Summer Lake Hot Springs is one of those remote destinations where the journey is just as rewarding as the final destination.

dramatically lit dark sky with a building lit red outside with green light coming from windows
Urban AlmanacDecember 5, 2024

How and Where to Cut Your Own Christmas Tree in Portland

Oregon holds the distinction of being the top grower and exporter of Christmas trees in the country.

Two people drag a fir tree through a snowy area.
Urban AlmanacNovember 13, 2024

Here Are 11 Spots In Oregon You Must Explore This Winter

The Wallowa Mountains are a winter wonderland this time of year.

snowy rocky mountains

The latest in Portland

Portland, ExplainedAugust 27

How Well Do You Know Our Local Mascots?

Portland Fire, the city’s WNBA team, revealed their new mascot this week after much fanfare.

Pink dragon in a Fire jersey.
The Weekly Wander by City Cast PortlandAugust 23

Your Guide to the Jade District

This Southeast Portland neighborhood is a place where traditions come together to tell a story of great food, artistic expression, & cama...

Two white stone lions stand outside the entrance to Fubonn Supermarket, an Asian grocery store in Portland’s Jade District.
The Weekly Wander by City Cast PortlandAugust 23

Side Quest: Local Economy Love

Across the city, 7 commercial districts receive support from Prosper Portland in the form of grants, training, & resources for local busi...

Two people pose in front of a colorful mural that spells out Laos.
The Weekly Wander by City Cast PortlandAugust 16

Your Guide to Portland's Hawthorne District

There’s always something going on in the Hawthorne District, it has lots of places to get lost (in a good way), and everything is incredi...

Two people walk along the crosswalk outside the Bagdad Theater & Pub, a historic building along Portland’s Southeast Hawthorne Boulevard. Its Middle Eastern-inspired marquee shows times for “A Quiet Place, Part 2”.
The Weekly Wander by City Cast PortlandAugust 16

Side Quest: The Great Indoors in Portland

If you happen to be on Hawthorne Boulevard when the sky’s hot and hazy, here are some ways to still have fun inside.

An ochre couch sits in the showroom at Vintage Pink in Portland, Oregon.
The Weekly Wander by City Cast PortlandAugust 9

Your Guide to the North Shore

It’s not as shiny as Vancouver’s waterfront, but there’s plenty to do and see if you know where to look, so let’s dive in.

Alternating images show scenes from the 2025 edition of the Portland Classic, a non-major tournament on the LPGA Tour.
The Weekly Wander by City Cast PortlandAugust 9

Side Quest: Keep Calm and Paddle On

Whether you’re paddling a kayak, a canoe, or a stand-up paddle board, spending time exploring Portland’s waterways is a huge perk about w...

A person floats on greenish-blue water in a yellow kayak, photographed from above.
Summer GuideJuly 30

Tips for a Better August 2026 in Portland

August is our hottest month, so we all need to figure out how to stay cool in Portland - check out a few tips we've gathered.

The Oregon coast with haystack rocks off the shore and a wide beach.