Culinary Connectors. Culinary Connectors offers Denver-based culinary tours of the city's best restaurants, cafés, and craft-beer havens. Each tour is a private event that must be scheduled in advance. Colorado. 303/495–5487; www.culinaryconnectors.com. From $34.
Field Guides. Field Guides takes birders on 10-day trips in search of Colorado's prairie chickens and grouse every April. Colorado. 800/728–4953; 512/263–7295; www.fieldguides.com. From $3,150 (requires $325 deposit).
OARS. OARS offers multiday rafting trips on the Yampa and Green rivers and hiking vacations in Chaco Canyon, Mesa Verde National Park, Ute Mountain Tribal Park, and National Bridges Monument. Colorado. 800/346–6277; www.oars.com/colorado. From $79 for day trips.
Victor Emanuel Nature Tours. Victor Emanuel Nature Tours offers several Colorado-based birding tours in the spring and summer. Colorado. 512/328–5221; 800/328–8368; www.ventbird.com. From $2,895.