Home
  • Blog
  • Sign in
  • Newsletter Sign Up
  • Blog
  • Sign in
  • Newsletter Sign Up
  • Programs & Events
    • Activities
    • Speaker Series
    • Events
    • Adults
    • Kids
    • Families
    • Guided Tours
    • Birding
    • Jessica Catto Dialogues
    • Rock Bottom Ranch

    Happening Soon

    Jul. 5th, 6:30am to 9:30am

    Every other Tuesday, varying times 

    • Read more about Tuesday Birding at Hallam Lake
    Jul. 12th, 6:30am to 9:30am

    Every other Tuesday, varying times 

    • Read more about Tuesday Birding at Rock Bottom Ranch
    Jul. 13th, 9:00am to 4:00pm
    Bee on a purple flower
    • Read more about Pollination Ecology: Biology of a Partnership
    View All Programs & Activities
  • Our Work

    Educating for Environmental Responsibility:

    Forest Programs

    Naturalist Programs

    ACES Ed

    Regenerative Ag

    Adult Programs & Experiences

    Youth Camps & Experiences

  • Research & Resources
    • Jessica Catto Dialogues
    • Phenology Resources
    • Get Involved
    • Wildlife Videos
    • Naturalist Nights Videos
    • The Hidden Life Around Us Book

    Learn more about your home:

    Osprey Camera

    Forest Health Index

    Roaring Fork River Gauge

    Birding

  • About
    • Our Story
    • Reports and Financials
    • Partners
    • Staff
    • Work at ACES
    • Board of Trustees

    Visit our locations:

    Rock Bottom Ranch

    Tractor with I love chickens bumper sticker

    Hallam Lake

    Aspen Center for Environmental Studies Hallam Lake entrance

    Catto Center at Toklat

    Oaxacan rug hanging outside of toklat with golden aspen trees
  • Support
    • Donate
    • Membership
    • Donor Circles
    • Volunteer
    • Get Involved
    • Corporate Sponsors

    Be a bold visionary for the environment:

    Renew Your Membership

    ACES Bird Club

    Gift & Tribute Memberships

    Capital Campaign

Search form

Donate Now
Home Search

type:

  • Outdoor Experiences Apply Outdoor Experiences filter
  • Speakers Apply Speakers filter
  • Special Events Apply Special Events filter

topic:

  • Art Apply Art filter
  • Astronomy Apply Astronomy filter
  • Birding Apply Birding filter
  • Dinners Apply Dinners filter
  • Farming Apply Farming filter
  • Food Apply Food filter
  • Hiking Apply Hiking filter
  • Jessica Catto Dialogues Apply Jessica Catto Dialogues filter
  • Science Apply Science filter
  • Wildlife Apply Wildlife filter
  • Yoga Apply Yoga filter

location:

  • Aspen Area Apply Aspen Area filter
    • Aspen Mountain Apply Aspen Mountain filter
    • Hallam Lake Apply Hallam Lake filter
    • Maroon Bells Apply Maroon Bells filter
    • North Star Apply North Star filter
    • Snowmass Apply Snowmass filter
    • Toklat/Ashcroft Apply Toklat/Ashcroft filter
  • Basalt/Carbondale Apply Basalt/Carbondale filter
    • Rock Bottom Ranch Apply Rock Bottom Ranch filter

grade:

  • Kindergarten Apply Kindergarten filter
  • 1st Grade Apply 1st Grade filter
  • 2nd Grade Apply 2nd Grade filter
  • 3rd Grade Apply 3rd Grade filter
  • 4th Grade Apply 4th Grade filter
  • 5th Grade Apply 5th Grade filter
  • 6th Grade Apply 6th Grade filter
  • 7th Grade Apply 7th Grade filter
  • 8th Grade Apply 8th Grade filter
  • High School Apply High School filter

age:

  • Adults Apply Adults filter
  • Families Apply Families filter
  • Kids Apply Kids filter

availability:

  • Available Apply Available filter
Dates
E.g., Jul 01, 2022
—
E.g., Jul 01, 2022
View
View

Tuesday Birding at Hallam Lake

Tuesday Birding at Hallam Lake

Jul. 5th, 6:30am to 9:30am

This class requires advanced registration to ensure appropriate planning for the field experience.

Raptor Fair

Raptor Fair

Jul. 5th, 3:00pm to 5:00pm

Join us at Hallam Lake for our 9th annual Raptor Fair, a free community event for all ages.

Sound Bath

Sound Bath

Jul. 5th, 5:15pm to 6:30pm

ACES &

Sunset Beaver Walk

Sunset Beaver Walk

Jul. 5th, 7:30pm to Sep. 15th, 8:30pm

Advance registration is required.

Birding by Habitat: Snowmass

Birding by Habitat: Snowmass

Jul. 7th, 7:00am to 12:00pm

The montane lifezone is especially diverse, sandwiched between the habitats of the high mountains and the foothills.

Farm to Table Dinners

Farm to Table Dinners

Jul. 7th, 6:30pm to 10:30pm

Birding by Habitat: Castle Creek Valley

Birding by Habitat: Castle Creek Valley

Jul. 11th, 7:00am to 11:30am

July is an excellent time to observe birds in the upper montane aspen forests, wildflower meadows, and riparian groves of spruce of the Castle Creek Valley, offering prime habitat for classic Rocky Mountain birds such as dusky grouse, Red-naped sapsucker, yellow-rumped warbler, mountain bluebird, broad-tailed hummingbird, northern goshawk, various flycatchers, and many more.

Know Your Trees | Tree Identification Walk

Know Your Trees | Tree Identification Walk

Jul. 11th, 4:00pm to 5:00pm

Advance registration is required.

Tuesday Birding at Rock Bottom Ranch

Tuesday Birding at Rock Bottom Ranch

Jul. 12th, 6:30am to 9:30am

This class requires advanced registration to ensure appropriate planning for the field experience.

Wild Yoga

Wild Yoga

Jul. 12th, 5:15pm to 6:30pm

ACES &

Evening Hummingbird Study

Evening Hummingbird Study

Jul. 12th, 7:45pm to 9:00pm

Join us for an evening with hummingbirds to observe these birds foraging before they roost for the night.

Pollination Ecology: Biology of a Partnership

Pollination Ecology: Biology of a Partnership

Jul. 13th, 9:00am to 4:00pm

The science of pollination biology is less than a century and a half old, and its popularity as a field of investigation has increased substantially only in the last fifty years.

  • Show more

Rock Bottom Ranch

Tuesdays - Fridays, 9am-4pm
Saturdays, 9am-1pm
Tel: 970.927.6760

2001 Hooks Spur Road
Basalt, CO 81621

Hallam Lake

Mon - Fri, 9am-5pm
Sat, 9am-5pm in summer
Tel: 970.925.5756

100 Puppy Smith Street
Aspen, CO 81611

Catto Center at Toklat

Closed for renovations until spring 2023
Tel: 970.925.9157

11245 Castle Creek Road
Aspen, CO 81611

Privacy Policy  |  Terms and Conditions  |  Careers  |  Charity Navigator
©2022 Aspen Center for Environmental Studies