Upcoming Field Trips

 

Click the Details button to view complete trip information and register for a trip. Trips highlighted in green are filled, but register to be added to the waiting list. Often, some original registrants drop out, opening spots to those on the waiting list. If you have symptoms of illness please be courteous of the welfare of other participants by canceling your registration for the trip.

Some field trips require carpooling with volunteer drivers so that we may lessen our impact on the environment, provide for logistical needs of having fewer vehicles, and improve the quality of the field trip experience. DFO recommends mileage reimbursement to volunteer carpool drivers of $0.50/mile divided by the number of persons in the car. This amount may be optionally reduced at the discretion of a driver. Riders should please come prepared to reimburse the driver at the conclusion of the field trip. 

Please note:

  • You must register as an individual (separate login) so that the liability waiver on file is attached to your registration.
    • If you are having trouble registering multiple individuals in the same family membership, please contact the Field Trip Chair (see "Leadership" list in the "About DFO" section of the website).

    Please help us make DFO field trips better. Read our condensed guidelines or even better, check out the full document BETTER BIRDING WITH DFO: How to Get the Most Out of Your Denver Field Ornithologists Field Trip.

    • eBird HotspotseBird Hotspot - site descriptions and photos (submit your additions)
    Key to Special Focus Trips
    Birds Plus+
    Birds Plus+
    Developing Birder
    Developing Birder
    Patch Birding
    Patch Birding
    Bird Song Focus
    Bird Song Focus
    Birding By Bike
    Birding By Bike
    Summer Hummers
    Summer Hummers
    Aiken Audubon Co-sponsored
    Aiken Audubon Co-sponsored
    Denver Audubon Co-sponsored
    Denver Audubon Co-sponsored
     WhereDateLeader(s)DifficultyMaximumRegistered
    Jefferson County Parks
    White Ibis Stakeout

    Tue, Apr 14
    4:00 PM - 5:00 PM
    Ryan Corda
    Easy126
    Patch Birding Marjorie Perry Park Nature Reserve (Patch Birding Trip)
    Early Migrant Trip

    Wed, Apr 15
    7:00 AM - 9:00 AM
    Ethan Cleveland
    Easy1011
    Patch Birding Sandstone Ranch Open Space (Douglas County) (Patch Birding Trip)
    Wed, Apr 15
    7:00 AM - 12:30 PM
    Chris Gilbert
    Moderate88
    Denver Audubon Co-sponsored Beaver Ranch Park
    Denver Audubon Co-sponsored

    Thu, Apr 16
    6:30 AM - 10:30 AM
    David Suddjian
    Moderate811
    Denver Audubon Co-sponsored Developing Birder Tucker Gulch (Developing Birder Trip)
    Weekly April Exploration

    Denver Audubon Co-sponsored

    Fri, Apr 17
    4:30 PM - 7:30 PM
    Ryan Corda
    Easy88
    Lagerman Reservoir
    Sat, Apr 18
    7:00 AM - 11:00 AM
    Laura Steadman
    Moderate88
    Denver Audubon Co-sponsored Birds Plus+ Dinosaur Ridge (Birds Plus+ Trip)
    Denver Audubon Co-sponsored

    Sat, Apr 18
    8:30 AM - 1:00 PM
    Ajit Antony & Liza Antony
    Moderate1416
    Rocky Mountain Arsenal NWR
    South Side Hotspots

    Sun, Apr 19
    6:00 AM - 12:00 PM
    Jason Bidgood
    Strenuous89
    Patch Birding Columbine Open Space (Douglas County) (Patch Birding Trip)
    Sun, Apr 19
    7:00 AM - 12:30 PM
    Chris Gilbert
    Moderate88
    Patch Birding Lincoln Mountain Open Space, Douglas County (Patch Birding Trip)
    Tue, Apr 21
    7:00 AM - 12:30 PM
    Chris Gilbert
    Strenuous89
    Denver Audubon Co-sponsored Birds Plus+ Prairie Sky Park (Birds Plus+ Trip)
    Denver Audubon Co-sponsored

    Tue, Apr 21
    7:30 AM - 10:30 AM
    Robert Sanchez & Heather Sanchez
    Strenuous126
    Developing Birder Red Rocks Park (Developing Birder Trip)
    Wed, Apr 22
    6:45 AM - 9:30 AM
    Judy McKeon
    Moderate89
    Denver Audubon Co-sponsored Deer Creek Canyon Open Space Park
    Denver Audubon Co-sponsored

    Fri, Apr 24
    6:30 AM - 11:00 AM
    David Suddjian
    Moderate89
    Denver Audubon Co-sponsored South Platte Park--South End
    Denver Audubon Co-sponsored

    Fri, Apr 24
    8:00 AM - 11:00 AM
    Julia Gwinn
    Easy105
    Denver Audubon Co-sponsored Developing Birder Tucker Gulch (Developing Birder Trip)
    Weekly April Exploration

    Denver Audubon Co-sponsored

    Fri, Apr 24
    4:30 PM - 7:30 PM
    Ryan Corda
    Easy87
    Belmar Historic Park
    A birding walk before the "Gear Up & Get Out" sale

    Sat, Apr 25
    8:30 AM - 10:30 AM
    Shay Lyons & Ryan Corda
    Easy17
    Denver Audubon Co-sponsored Birds Plus+ Dinosaur Ridge (Birds Plus+ Trip)
    Hawk watch, area paleontology and geology

    Denver Audubon Co-sponsored

    Sat, Apr 25
    8:30 AM - 1:00 PM
    Ajit Antony & Liza Antony
    Moderate122
    Denver Audubon Co-sponsored Birds Plus+ Bobolink Trail (Boulder County) (Birds Plus+ Trip)
    Participate in an iNaturalist Bioblitz!

    Denver Audubon Co-sponsored

    Sat, Apr 25
    2:00 PM - 5:00 PM
    Laura Steadman
    Easy165
    Developing Birder Tucker Gulch (Developing Birder Trip)
    Spring into Spring with Tucker Gulch!

    Sun, Apr 26
    7:00 AM - 10:30 AM
    Lynn Slaga
    Easy88
    Aiken Audubon Co-sponsored Chico Basin Ranch
    Aiken Audubon Co-sponsored

    Mon, Apr 27
    5:00 AM - 3:00 PM
    Jessica Miller
    Moderate1119
    Denver Audubon Co-sponsored White Ranch Park (West) (JeffCo Open Space)
    Denver Audubon Co-sponsored

    Tue, Apr 28
    6:15 AM - 12:00 PM
    David Suddjian & Anne Craig
    Strenuous66
    Ponderosa Preserve (City of Aurora)
    Thu, Apr 30
    8:30 AM - 11:30 AM
    Cynthia Cestkowski
    Moderate89
    Denver Audubon Co-sponsored Birds Plus+ Audubon Kingery Nature Center and Trails (Birds Plus+ Trip)
    Explore Bird Banding and Ecology of the S. Platte

    Denver Audubon Co-sponsored

    Fri, May 1
    7:00 AM - 10:30 AM
    Charles Chase
    Easy157
    Denver Audubon Co-sponsored Chatfield State Park
    Upstream from Kingfisher Bridge

    Denver Audubon Co-sponsored

    Fri, May 1
    8:00 AM - 11:00 AM
    Cynthia Breidenbach & Angela Grun
    Moderate1010
    Birding By Bike Denver Area Parks (Birding By Bike Trip)
    Sat, May 2
    7:00 AM - 1:00 PM
    Nate Bond
    Strenuous85
    Denver Audubon Co-sponsored Developing Birder South Valley Park - Jefferson Co. OS (Developing Birder Trip)
    Bluebirds, raptors, and other migrants

    Denver Audubon Co-sponsored

    Sat, May 2
    7:30 AM - 11:00 AM
    David Suddjian
    Moderate810
    Aiken Audubon Co-sponsored Pueblo area
    Aiken Audubon Co-sponsored

    Sun, May 3
    6:00 AM - 4:00 PM
    Jessica Miller
    Moderate1212
    Patch Birding Prospect Park (Wheat Ridge Greenbelt) (Patch Birding Trip)
    Wheat Ridge Greenbelt and Lakes

    Sun, May 3
    7:00 AM - 10:30 AM
    Lynn Slaga
    Moderate81
    Denver Audubon Co-sponsored Quincy Reservoir in Aurora
    Denver Audubon Co-sponsored

    Reg. opens 4/13/2026 at 12 pm
    Mon, May 4
    8:30 AM - 11:30 AM
    Cynthia Cestkowski
    Moderate82
    Genesee Park (Denver Mountain Parks)
    Reg. opens 4/15/2026 at 12 pm
    Wed, May 6
    6:45 AM - 10:00 AM
    Judy McKeon
    Easy81
    Denver Audubon Co-sponsored Clear Creek Trail
    Clear Creek Birding Adventure #4 - N Pecos - I25

    Denver Audubon Co-sponsored

    Reg. opens 4/23/2026 at 12 pm
    Thu, May 14
    6:30 AM - 10:00 AM
    Linda Purcell
    Easy81
    Denver Audubon Co-sponsored Birds Plus+ Audubon Kingery Nature Center and Trails (Birds Plus+ Trip)
    Explore Bird Banding and Ecology of the S. Platte

    Denver Audubon Co-sponsored

    Reg. opens 4/24/2026 at 12 pm
    Fri, May 15
    7:00 AM - 10:30 AM
    Charles Chase
    Easy151
    Denver Audubon Co-sponsored Developing Birder Tucker Gulch (Developing Birder Trip)
    Denver Audubon Co-sponsored

    Reg. opens 4/24/2026 at 12 pm
    Fri, May 15
    2:30 PM - 5:30 PM
    Ryan Corda
    Easy81
    Developing Birder Tucker Gulch (Developing Birder Trip)
    Spring into Spring with Tucker Gulch!

    Reg. opens 4/25/2026 at 12 pm
    Sat, May 16
    7:00 AM - 10:30 AM
    Lynn Slaga
    Easy81
    Denver Audubon Co-sponsored Developing Birder Common Poorwill Evening (Developing Birder Trip)
    Denver Audubon Co-sponsored

    Reg. opens 4/25/2026 at 12 pm
    Sat, May 16
    7:15 PM - 9:15 PM
    David Suddjian
    Moderate81
    Developing Birder Barr Lake State Park (Developing Birder Trip)
    Spring migration at a very birdy hotspot!

    Reg. opens 4/26/2026 at 12 pm
    Sun, May 17
    7:00 AM - 11:00 AM
    Shay Lyons & Ryan Corda
    Moderate122
    Aiken Audubon Co-sponsored Birds Plus+ Paint Mines Interpretive Park (Birds Plus+ Trip)
    Including El Paso County Hotspots

    Aiken Audubon Co-sponsored

    Reg. opens 4/27/2026 at 12 pm
    Mon, May 18
    5:00 AM - 2:00 PM
    Linda Purcell & Judy McKeon
    Moderate102
    Denver Audubon Co-sponsored North-Central New Mexico and South-Central Colorado
    Explore scenic Colorado and New Mexico

    Denver Audubon Co-sponsored

    Reg. opens 4/29/2026 at 12 pm
    Wed, May 20 - Fri, May 22
    5:30 AM - 6:00 PM
    David Suddjian & Ryan Corda
    Strenuous82
    Denver Audubon Co-sponsored South Platte Park--South End
    Denver Audubon Co-sponsored

    Reg. opens 5/1/2026 at 12 pm
    Fri, May 22
    8:00 AM - 11:00 AM
    Cynthia Breidenbach & Julia Gwinn
    Easy102
    Denver Audubon Co-sponsored Developing Birder Common Poorwill Evening (Developing Birder Trip)
    Denver Audubon Co-sponsored

    Reg. opens 5/3/2026 at 12 pm
    Sun, May 24
    7:15 PM - 9:15 PM
    David Suddjian
    Moderate81
    Aiken Audubon Co-sponsored South Republican SWA
    Seeking Eastern US Bird Species in Colorado

    Aiken Audubon Co-sponsored

    Reg. opens 5/7/2026 at 12 pm
    Thu, May 28
    5:30 AM - 4:30 PM
    Gary Witt
    Strenuous121
    Denver Audubon Co-sponsored Birds Plus+ Audubon Kingery Nature Center and Trails (Birds Plus+ Trip)
    Explore Bird Banding and Ecology of the S. Platte

    Denver Audubon Co-sponsored

    Reg. opens 5/8/2026 at 12 pm
    Fri, May 29
    7:00 AM - 10:30 AM
    Charles Chase
    Easy151
    Ponderosa Preserve (City of Aurora)
    Reg. opens 5/8/2026 at 12 pm
    Fri, May 29
    8:30 AM - 11:30 AM
    Cynthia Cestkowski
    Moderate121
    Chatfield State Park - Marina sandspit
    Reg. opens 5/9/2026 at 12 pm
    Sat, May 30
    7:00 AM - 11:00 AM
    Joey Kellner
    Moderate1
    Denver Audubon Co-sponsored Tamarack Ranch State Wildlife Área
    Denver Audubon Co-sponsored

    Reg. opens 5/21/2026 at 12 pm
    Thu, Jun 11 - Fri, Jun 12
    1:00 PM - 3:00 PM
    Gary Witt
    Strenuous91
    Flying J Ranch (Jefferson County Open Space)
    Flying J Ranch

    Reg. opens 5/23/2026 at 12 pm
    Sat, Jun 13
    7:00 AM - 11:30 AM
    Lynn Slaga
    Moderate81
    Denver Audubon Co-sponsored South Platte Park--South End
    Denver Audubon Co-sponsored

    Reg. opens 5/29/2026 at 12 pm
    Fri, Jun 19
    8:00 AM - 11:00 AM
    Cynthia Breidenbach & Julia Gwinn
    Moderate102
    Denver Audubon Co-sponsored Lair o' the Bear Park (Jefferson County)
    American Dipper Focus

    Denver Audubon Co-sponsored

    Reg. opens 6/6/2026 at 12 pm
    Sat, Jun 27
    7:00 AM - 10:00 AM
    Alison Kondler
    Easy101

    Click on an icon for some basic trip details

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