| Habitat Type | Code - Description |
| Grassland | TMG - montane meadow |
| Grassland | TAL - alpine tundra |
| Shrubs | SBC - higher-elevation carr |
| Shrubs | SKR - krummholz |
| Shrubs | SSLL - clearcut areas re-growing with lodgepole pine |
| Shrubs | SSLE - clearcut areas re-growing with Engelmann spruce |
| Shrubs | SSLF - clearcut areas re-growing with subalpine fir forest |
| Shrubs | SSLB - clearcut areas re-growing with bristlecone pine forest |
| Shrubs | SSLM - clearcut areas re-growing with limber pine forest |
| Shrubs | SBLL - burned areas re-growing with lodgepole pine |
| Shrubs | SBLE - burned areas re-growing with Engelmann spruce |
| Shrubs | SBLF - burned areas re-growing with subalpine fir forest |
| Shrubs | SBLB - burned areas re-growing with bristlecone pine forest |
| Shrubs | SBLM - burned areas re-growing with limber pine forest |
| Forest | FRC - riparian coniferous |
| Forest | FAM - mixed aspen-conifer forest |
| Forest | FAP - pure aspen |
| Forest | FUCP - ponderosa pine forest |
| Forest | FUCD - Douglas fir forest |
| Forest | FUCL - lodgepole pine forest |
| Forest | FUCE - Engelmann spruce forest |
| Forest | FUCF - subalpine fir forest |
| Forest | FUCB - bristlecone pine forest |
| Forest | FUCM - limber pine forest |
| Wetlands/Water | AEM - emergent wetlands (marshes) |
| Wetlands/Water | ASU - submerged or floating mats of vegetation |
| Wetlands/Water | ASL - shoreline |
| Wetlands/Water | OWL - open water: lakes and ponds |
| Wetlands/Water | OWS - open water: streams |
| Urban/Other | RRL - rural: scattered farm buildings, with/without plantings |
| Urban/Other | TSU - barren ground: plowed fields, blowouts, dunes |
| Urban/Other | MCL - cliffs (but not talus, scree, rock piles, which would be MSC) |
| Urban/Other | MBK - dirt or clay bank: natural or man made |
| Urban/Other | MSB - bridges & culverts: use this for nest location only |
| Urban/Other | MSP - power poles, transmission towers (for nests); not fence posts |
| Urban/Other | MSC - miscellaneous: anything not above |
| Forest | FUCX - high elevation mixed conifer (fir, spruce, pines) |