City Cast Denver logo

What is the Colorado Tarantula 'Mate-gration'?

Posted on September 17, 2024   |   Updated on September 30, 2025
Peyton Garcia

Peyton Garcia

A tarantula scuttles across some asphalt

Hundreds of tarantulas will venture out from their burrows this month in southeastern Colorado. (Rebecca L. Latson / Getty Images)

It’s Tarantula Time

Right now, Colorado — more specifically, the southeastern Colorado town of La Junta — is smack dab in the middle of tarantula mating season, and it’s quite the spectacle. Despite often being called Colorado’s great annual “tarantula migration,” these little critters aren’t actually going anywhere. Rather, thousands of sexually mature male tarantulas leave their burrows for an elaborate mating ritual that includes them “knocking” at female tarantulas’ burrows looking for love, and often ends in the males being eaten by the females. Tarantula mating season typically lasts from late August through early October, with a peak in mid-September.

Plan A Tarantula-Viewing Trip

Visit La Junta offers these tips for tarantula tourists.

Spiders Closer To Home

The Denver Butterfly Pavilion conducts its own in-depth tarantula breeding, conservation, and education efforts. Also returning this month is the limited-time “Spiders Around the World” exhibit. Step into the 80-foot “Spider Zone” enclosure to get up-close and personal with dozens of free-roaming spiders representing species from more than 20 different countries!

Share article

Hey Denver

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

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

The latest in Denver

Sponsored

Best Online Casinos for Real Money You Can Trust Today

Find the best online casinos for real money with fast payouts, big bonuses, and top games. Compare sites and start playing now.

UpVenture Logo
Denver, ExplainedOctober 1

Your Guide to Denver in October 2026

If your ideal fall Saturday includes food trucks, live music, shopping, and dogs in costumes, Tennyson Fall Fest understood the assignment.

scissors and crocheting needles sitting on top of a scarf with yarn.
Keep It LocalOctober 1

Where to Buy Beat Poet Essentials

Hip specs, used philosophy books, snail mail supplies, and Kerouac's favorite drink: Find your inner Beat poet at these four local Denver...

 A pair of glasses with brown frames rests on a brown wooden table.
Keep It LocalOctober 1

A Beat-Inspired Weekend Itinerary

Looking for a scenic getaway? Check out this guide on romanticizing your life, riding Amtrak's California Zephyr from Denver to Glenwood...

A silver train follows a track through red cliffs dotted with sagebrush in the Colorado mountains.
Denver's BestOctober 1

How to Get Those Autumnal Vibes

City Cast Denver girlies Bree Davies, Olivia Jewell Love, and Grace Zahn share their fave ways to get the autumnal vibes just right.

Two lattes sitting side-by-side.
Denver Life HacksSeptember 28

How to Navigate Denver's First PorchFest

Denver’s first PorchFest is bringing 193 acts to Baker on Oct. 3, turning porches, backyards, parking lots into stages from noon to 7 p.m...

Musicians perform for a crowd at a neighborhood PorchFest.
Keep It LocalSeptember 24

Where to Find All the Pumpkin Home Goods

It's pumpkin season! Here are the best places in Denver to grab your next pumpkin-flavored and pumpkin-designed fall goods.

White cake inside a box with orange writing that says “Hello Fall!” and red and yellow flowers with green leaves made from icing.
Keep It LocalSeptember 24

Where to Buy Actual Pumpkins

The only thing better than buying all the pumpkin-themed things? Buying actual pumpkins. Here's a quick and easy guide to shopping for yo...

A pile of pumpkins sits on hay bales in orange, beige, and green heirloom varieties with a blue sky in the background.