| The population of birds |
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This is a list of Gaviiformes 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.
All Gaviiformes have been quantified.
| Common name | Binomial name | Population | Status | Trend | Image |
|---|---|---|---|---|---|
| Yellow-billed loon | Gavia adamsii | 16,000–32,000 [1] | Near threatened [1] |  [1] |  |
| Red-throated loon | Gavia stellata | 200,000–600,000 [2] | Least concern [2] | [2] |  |
| Black-throated Loon (Arctic Loon) | Gavia arctica | 275,000–1,500,000 [3] | Least concern [3] | [3] |  | |
| Pacific loon | Gavia pacifica | 930,000–1,600,000 [4] | Least concern [4] |  [4] |  | |
| Common Loon | Gavia immer | 612,000-640,000 [5] | Least concern [5] |  [5] |  |
The Pacific loon or Pacific diver, is a medium-sized member of the loon, or diver, family.
This is a collection of lists of organisms by their population. While most of the numbers are estimates, they have been made by the experts in their fields. Species population is a science falling under the purview of population ecology and biogeography. Individuals are counted by census, as carried out for the piping plover; using the transect method, as done for the mountain plover; and beginning in 2012 by satellite, with the emperor penguin being first subject counted in this manner.
This is a collection of lists of mammal species by the estimated global population, divided by orders. Lists only exist for some orders; for example, the most diverse order - rodents - is missing. Much of the data in these lists were created by the International Union for Conservation of Nature (IUCN) Global Mammal Assessment Team, which consists of 1700 mammalogists from over 130 countries. They recognize 5488 species in the class.
