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This is a list of Trogoniformes species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.
This list is not comprehensive, as not all Trogoniformes have had their numbers quantified.
| Common name | Binomial name | Population | Status | Trend | Notes | Image |
|---|---|---|---|---|---|---|
| Baird's trogon | Trogon bairdii | 1 000 – 4 000 [1] | NT [1] |  [1] |  | |
| Javan trogon | Apalharpactes reinwardtii | 2 500 – 9 999 [2] | VU [2] | [2] | Global population was heavily unestimated previously. [2] |  |
| Eared quetzal | Euptilotis neoxenus | 20 000 – 49 999 [3] | LC [3] | [3] |  | |
| Lattice-tailed trogon | Trogon clathratus | 20 000 – 49 999 [4] | LC [4] | [4] |  | |
| Resplendent quetzal | Pharomachrus mocinno | 50 000 – 499 999 [5] | NT [5] | [5] |  | |
| Slaty-tailed trogon | Trogon massena | 50 000 – 499 999 [6] | LC [6] | [6] |  | |
| Black-headed trogon | Trogon melanocephalus | 50 000 – 499 999 [7] | LC [7] | [7] |  | |
| Golden-headed quetzal | Pharomachrus auriceps | 50 000 – 499 999 [8] | LC [8] | [8] |  | |
| Citreoline trogon | Trogon citreolus | 50 000 – 499 999 [9] | LC [9] |  [9] |  | |
| Mountain trogon | Trogon mexicanus | 50 000 – 499 999 [10] | LC [10] | [10] |  | |
| Amazonian black-throated trogon | Trogon rufus | 500 000 – 4 999 999 [11] | LC [11] | [11] |  | |
| White-tailed trogon | Trogon chionurus | 500 000 – 4 999 999 [12] | LC [12] | [12] |  | |
| Collared trogon | Trogon collaris | 5 000 000 – 49 999 999 [13] | LC [13] | [13] |  | |
| Black-tailed trogon | Trogon melanurus | 5 000 000 – 50 000 000 [14] | LC [14] | [14] |  | |
Quetzals are strikingly colored birds in the trogon family. They are found in forests, especially in humid highlands, with the five species from the genus Pharomachrus being exclusively Neotropical, while a single species, the eared quetzal, Euptilotis neoxenus, is found in Guatemala, sometimes in Mexico and very locally in the southernmost United States. In the highlands of the states of Sonora, Chihuahua, Sinaloa, Durango, Nayarit, Zacatecas, Jalisco, and Michoacán, the eared quetzal can be found from northwest to west-central Mexico. It is a Mesoamerican indigenous species, but some reports show that it occasionally travels and nests in southeastern Arizona and New Mexico in the United States. June to October is the mating season for eared quetzals. Quetzals are fairly large, slightly bigger than other trogon species. The resplendent quetzal is the national bird of Guatemala because of its vibrant colour and cultural significance to the Maya.
The Scottish crossbill is a small passerine bird in the finch family Fringillidae. It is endemic to the Caledonian Forests of Scotland, and is the only terrestrial vertebrate species endemic to the United Kingdom. The Scottish crossbill was confirmed as a unique species in August 2006, on the basis of having a distinctive bird song.
The elegant trogon, previously known as the coppery-tailed trogon, is a near passerine bird in the trogon family native to Central America. The etymology of the word trogon comes from the Greek word trōgein, meaning "to gnaw", which describes how this species prepares its nests in trees.
This article is a list of biological species, subspecies, and evolutionary significant units that are known to have become extinct during the Holocene, the current geologic epoch, ordered by their known or approximate date of disappearance from oldest to most recent.
The bar-tailed trogon is a species of bird in the family Trogonidae. It is a resident bird to central Africa that eats primarily insects and fruit.
