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...

portal List of birds by population Lists of organisms by population World population (humans) IUCN (n.d.). "Initiatives:Mammals". IUCN Red List of Threatened...

estimations. Biology portal Mammals portal Lists of organisms by population Lists of mammals by population "Great Elephant Census Final Results". Great...

This page features lists of species and organisms that have become extinct. The reasons for extinction range from natural occurrences, such as shifts in...

portal Mammals portal Lists of organisms by population Lists of mammals by population Lists of elephant species by population Knoblauch, Wiebke; Carver...

7500% population growth since 1974, and the chinstraps 2700%. Biology portal Birds portal Lists of birds by population Lists of organisms by population BirdLife...

This is a list of the longest-living biological organisms: the individual(s) (or in some instances, clones) of a species with the longest natural maximum...

dependencies by population density List of largest cities Lists of organisms by population – for non-human global populations List of population concern organizations...

portal Lists of mammals by population Lists of organisms by population 1.^ Amount of quantified species contained in the list as of the "Retrieved" date...

This article lists the largest organisms for various types of life and mostly considers extant species, which found on Earth can be determined according...

Britain Lists of Lepidoptera by region Lists of mammals by population Lists of mammals by region Lists of moths Lists of organisms by population Lists of pigs...

quantified. Biology portal Mammals portal Lists of mammals by population Lists of organisms by population List of bats Lumsden, L., Racey, P.A. & Hutson...

Lists of organisms by population Lists of mammals by population Jackson, P.; Nowell, K. (2008). "Panthera pardus ssp. orientalis". IUCN Red List of Threatened...

quantified. Biology portal Mammals portal Lists of organisms by population Lists of mammals by population Human population The World's 25 Most Endangered Primates...

portal Lists of mammals by population Lists of organisms by population Ellis, S.; Talukdar, B. (2020). "Rhinoceros sondaicus". IUCN Red List of Threatened...

species in North America Listing priority number Lists of extinct animals Lists of organisms by population Living Planet Index Red List Index Regional Red...

which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature (IUCN) as that may be vulnerable to endangerment...

risk of extinction in the wild in the medium-term future, as defined by any of the following criteria (A to E): A) Population reduction in the form of either...

Population is a set of humans or other organisms in a given region or area. Governments conduct a census to quantify the resident population size within...

have links to more specific species lists. List of mammals Lists of mammals by population List of mammalogists European Mammal Atlas EMMA from Societas Europaea...

of birds by population Lists of organisms by population BirdLife International (2016). "Gavia adamsii". IUCN Red List of Threatened Species. IUCN. Retrieved...

individual organisms in a population. Population size is directly associated with amount of genetic drift, and is the underlying cause of effects like...

articles on population biology and population ecology. Biology portal Birds portal Lists of birds by population Lists of organisms by population IUCN (2020-08-19)...

have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based...

This is a list of estimated global populations of Lagomorpha species. This list is not comprehensive, as not all Lagomorphs have had their numbers quantified...

introduction of invasive species. Invasive species invade and exploit a new habitat for its natural resources as a method to outcompete the native organisms, eventually...

quantified. Biology portal Mammals portal Lists of mammals by population Lists of organisms by population Timmins, R. J., Hedges, S. & Robichaud, W....

Birds portal Lists of birds by population Lists of organisms by population BirdLife International (2012). "Apteryx owenii". IUCN Red List of Threatened...

categorized by the International Union for Conservation of Nature as only consisting of living members kept in captivity or as a naturalized population outside...

portal Lists of birds by population Lists of organisms by population BirdLife International (2012). "Todiramphus gambieri". IUCN Red List of Threatened...