Blue-chested Hummingbird vs Blue-throated Goldentail

The Blue-chested Hummingbird and Blue-throated Goldentail can be distinguished by their throat and tail coloration. The Blue-chested Hummingbird has a blue chest and a more uniform tail, while the Blue-throated Goldentail features a blue throat and a distinctive golden tail.

Focus on the throat and tail colors: Blue-chested Hummingbird has a blue chest and uniform tail, while Blue-throated Goldentail has a blue throat and golden tail.

The Blue-chested Hummingbird has a blue chest, whereas the Blue-throated Goldentail has a blue throat. The Blue-throated Goldentail also has a notable golden tail, which is absent in the Blue-chested Hummingbird.