Join us for Colorado Endangered Species Week 2023

Banner featuring Colorado endangered, threatened, and imperiled species

The Endangered Species Act turns 50 this year!

Endangered Species Act at 50 logo with illustrations of various species

The Endangered Species Act of 1973 (ESA) is a landmark piece of legislation that solidifies our national commitment to the conservation and protection of imperiled wildlife and plants. It’s an immensely popular and bipartisan bill that passed in a landslide. The Act remains a long-lasting example of commitment, cooperation, and the conservation triumphs we can make when working together.

In fact 99% of species protected under the Endangered Species Act have avoided extinction!

“This year, as we celebrate 50 years of the Endangered Species Act, we know its role in maintaining biodiversity is more important now than ever, especially as we face a worsening climate crisis and mass extinction. From protecting critical habitat to creating recovery plans, the Endangered Species Act has facilitated the recovery of species like the humpback whale and bald eagle, while also protecting iconic species like grizzly bears, sea turtles and jaguars. We know this milestone is also a time to reinvigorate our defense of Endangered Species Act protections. Each year, Republicans ramp up their attacks to undermine science-based decisions about listing, delisting, habitat protections and recovery, so they can more easily dole out favors for polluters. We stand ready to continue our fight for species and their habitats over the next 50 years and beyond.” 

House Natural Resources Ranking Member Raúl M. Grijalva

Despite its strong track record and the support of 90% of American voters, the Endangered Species Act continues to face political threats. In 2017 more than 400 organizations including us) signed a letter to members of Congress opposing efforts to weaken the law. This year provides an opportunity to reflect on the law’s successes, as well as find ways to strengthen it to protect imperiled plants and animals.

Visit the ESA at 50 website to find opportunities to join the celebration, educational resources, and more.

Join us for Colorado Endangered Species Week!

An illustration of a boreal toad
An illustration of a boreal toad by Chris Talbot-Heindl

On May 14-20, 2023, Rocky Mountain Wild and our partners will host the 7th annual Colorado Endangered Species Week! This week is dedicated to providing educational events and advocacy opportunities to protect the planet and species at risk here in Colorado.

During this week, Rocky Mountain Wild and our partners organize speakers, fundraisers, direct action events, and other activities along the Front Range, with major events occurring in Boulder and Denver.

Join us for the events and for The Most Awesome Environmental Online Auction in the Front Range! All items in this auction have been donated by members of a green coalition (1% for the Planet, Certifiably Green Denver, Certified Green Lafayette, Climate Neutral Certified, The Conservation Alliance, Good Food 100, Green America, etc) or the item itself may replace a less environmental one.

Schedule of Events:

For each day during Colorado Endangered Species Week, we’ll be focusing on one of our important species or wild places, or a solution that protects our important species or wildly places here in Colorado. Each day will feature a suite of activities, including things to read, direct actions to take, and things to watch to help us learn about and advocate for our Colorado imperiled, threatened, and endangered species!

Not in the area? A lot of the activities can be taken from wherever you are! You can also check out Endangered Species Coalition’s Event Map for activities and actions in your city!

Get Passionate for Plants, Monday , May 15

Get Hopping for Boreal Toad, Thursday, May 18

Get Howling for Wolves, Friday, May 19

The Most Awesome Environmental Online Auction in the Front Range:

A screenshot of the first row of items in the silent auction, showing a Flat tops Wilderness Guided Backpacking Tour for 1, a $250 gift card from Alpacka Raft, a 1 Night stay for 4 people in a hut, and the Echo Meter Touch 2 for Android

Colorado Endangered Species Week includes The Most Awesome Environmental Online Auction in the Front Range, with auction items that are either donated by a business with a green coalition membership or items that are environmental in nature.

The online auction will open at noon MT on May 12 and close at noon MT on May 20. Check out the items in the silent auction here! And register to bid here.

Here is more information about the silent auction for businesses. If you would like to donate something to the online auction, please fill out our Google form or email with the details.

A huge thank you to Wild Connections for sponsoring The Most Awesome Environmental Online Auction in the Front Range!

A huge thank you to this year’s donors:


This week can’t happen without the help of all our partners. If you are interested in becoming a Media Sponsor, a Resource Partner, an Event Partner, or a Sponsor, please check out our Sponsorship Packet and email Chris at with the type of partnership you would like to have this year.

A huge thank you to this year’s partners:

Bat Conservation International logo
Defenders of Widlife
Wilderness Workshop logo
Denver Zoo logo
Endangered Species Coalition logo
Good Business Colorado logo
Suelo Bueno Consulting logo
Cool Boulder logo
Clove & Twine Logo
Green Spaces Logo
Next 100 Colorado logo
People and Pollinators Action Network logo
Wild Connections logo
Zusa logo

For the Kids (and Kids at Heart):

Header image: Top row: American pika (imperiled, but not listed) courtesy of Will Thompson, USGS; boreal toad (state endangered) courtesy of Colorado Parks and Wildlife; greater sage-grouse (state special concern) courtesy of Bob Wick, Bureau of Land Management; Colorado River cutthroat trout (state special concern) courtesy of Colorado Parks and Wildlife; least tern (state endangered) courtesy of Amanda Boyd, USFWS; Bottom row: burrowing owl (state threatened) courtesy of Ben Lawrence; kit fox (state endangered) courtesy of Kelly Rigby, Bureau of Land Management; clay-loving wild buckwheat (state endangered) courtesy of Langton Alicia, USFWS; longnose leopard lizard (state special concern) courtesy of William Bosworth, ID Department of Fish and Game. All images are public domain.