These uncommon hummingbirds are an amazing sight to see when they flare their bright red tails.
Ruby-topaz Hummingbird (Chrysolampis mosquitus) Small hummingbird with a rather large range across northeastern South America and eastern Panama. Male is unmistakable with a golden throat, a ruby-red crown, and an orange tail with dark tips. Female is trickier to identify, but note the pale gray underparts, white-tipped tail feathers, and dull grayish green upperparts. The short and slightly decurved bill should also help identify the female. Fairly common in open habitats, including savannah, forest edge, and gardens.
Bird songs, sound recordings, and species range map: https://xeno-canto.org/species/Chrysolampis-mosquitus
E Bird https: https://ebird.org/species/ruthum1/ and https://ebird.org/explore
Merlin Bird ID (great app available for Iphones) by The Cornell Lab (Bird ID help for 8,500+ species) https://merlin.allaboutbirds.org/
At nest with well-grown young - early March.