I think I might like a Trumpet Vine to attract hummingbirds. The only thing that holds me back is the fact that the plant grows so big, something we really wouldn't want in our back yard. Anyone have experience with the Trumpet Vine and flower? The flowers are quite attractive. By the way, can you spot the two ants on the flowers?

Some facts about the Trumpet Vine -

Light: Sun
Type: Vine
Height: From 8 to 20 feet or more
Width: Climbs to 30 feet
Flower Color: Orange, Red
Foliage Color: Chartreuse/Gold
Seasonal Features: Fall Bloom, Summer Bloom
Problem Solvers: Drought Tolerant
Special Features: Attracts Birds, Good for Containers, Low Maintenance
Zones: 5-9

Source - http://www.bhg.com/gardening/plant-dictionary/vine/trumpet-vine/