Recent research into short-distance migration within tropical birds has shown that many hummingbirds are altitudinal migrants, meaning they migrate up- and downhill with the seasons. These migrations are triggered by changes in food availability, probably relating to the flowers they visit. Others visitors may be lost or wandering birds that turn up less than once a year.

Ch = Chocó endemic

White-whiskered Hermit Phaethornis yaruqui Ch
  Regular visitor that comes to the feeders between visits to flowers.
Tawny-bellied Hermit Phaethornis syrmatophorus
  Does not visit the feeders but common around Heliconia flowers in the forest.
Green-fronted Lancebill Doryfera ludovicae
  Rarely visits the feeders, can be seen near rivers in the forest, where it hawks for insects.
White-necked Jacobin Florisuga mellivora
  Common visitor to the feeders; aggressive, territorial; at the upper limit of its altitudinal range here.
Brown Violetear Colibri delphinae
  Common at the feeders.
Green Violetear Colibri thalassinus
  Common at the feeders but seasonal.
Sparkling Violetear Colibri coruscans
  Common at the feeders.
Green Thorntail Popelairia conversii
  Rare visitor; has come to the feeders only a few times; a bird of lower areas.
Western Emerald Chlorostilbon melanorhynchus Ch
  Common at the feeders.
Green-crowned Woodnymph Thalurania fannyi
  Common at the feeders.
Rufous-tailed Hummingbird Amazilia tzacatl
  One of the most common hummingbirds at the feeders, aggressive.
Andean Emerald Amazilia franciae
  Common at the feeders.
Speckled Hummingbird Adelomyia melanogenys
  Common at upper part of the reserve; rare at the feeders.
Purple-bibbed Whitetip Urosticte benjamini Ch
  Fairly common at the feeders.
Empress Brilliant Heliodoxa imperatrix Ch
  Seasonal at the feeders, often absent.
Green-crowned Brilliant Heliodoxa jacula
  Common at the feeders.
Fawn-breasted Brilliant Heliodoxa rubinoides
  Common at the feeders.
White-tailed Hillstar Urochroa bougueri
  Rare at the feeders; this bird is most common near water.
Brown Inca Coeligena wilsoni Ch
  Seasonal at the feeders.
Collared Inca Coeligena torquata
  A bird of higher altitudes, seen only a few times at the feeders; common in higher part of reserve.
Buff-tailed Coronet Boissonneaua flavescens
  Seasonal at the feeders; common in higher part of forest.
Velvet-purple Coronet Boissonneaua jardini Ch
  Rare visitor at the feeders’
Hoary Puffleg Haplophaedia lugens Ch
  Hasn’t visited the feeders but has been seen in the forest.
Booted Racket-tail Ocreatus underwoodii
  Common at the feeders.
Green-tailed Trainbearer Lesbia nuna
  doesn’t visit feeders but seasonally common in secondary woodland.
Violet-tailed Sylph Aglaiocercus coelestis Ch
  Seasonally uncommon at the feeders.
Wedge-billed Hummingbird Schistes geoffroyi
  Doesn’t visit feeders, but often seen at flowers in the gardens.
Purple-crowned Fairy Heliothryx barroti
  A rare visitor from lower altitudes.
Long-billed Starthroat Heliomaster longirostris
  A rare visitor from lower altitudes.
Purple-throated Woodstar Calliphlox mitchellii
  Common at the feeders.
White-bellied Woodstar Acestrura mulsant
  Seasonally uncommon at the feeders.
Little Woodstar chetocercus bombus
  A rare visitor at the feeders.