This is a list of bat 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.

Mammals by population
Lists Even-toed ungulates (Artiodactyla) Carnivorans (Carnivora) Cetaceans (Cetacea) Bats (Chiroptera) Odd-toed ungulates (Perissodactyla) Primates (Primates)
Key
Related Lists of organisms by population List of birds by population Mammal classification List of recently extinct mammals Lists of mammals by region
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This list is not comprehensive, as not all bats have had their numbers quantified.

Common name	Binomial name	Population	Status	Trend	Notes	Image
Christmas Island Pipistrelle	Pipistrellus murrayi	0[1]	EX[1]	[1]	Common and widespread until the 1980s. In January 2009, there were 4 individuals left. An immediate capturing project was requested to save the species, and efforts for approval included a personal meeting with then-Australian environment minister Peter Garrett. Due to a potential cost of a few hundred thousand dollars, the government decided against quick action and instead undertook a bureaucratic feasibility study. After its eventual assent in August 2009 a team of experts travelled to Christmas Island to capture the remaining individuals but only one was detected, which managed not to be caught. On August 27, 2009, the last remaining individual disappeared, causing the species to become extinct. Its subsequent disappearance may be one of very few times extinction has been witnessed first-hand. Reasons for the bat's extinction remain unknown.[1][2]
Jamaican greater funnel-eared bat	Natalus jamaicensis	50[3]	CR[3]	[3]	Only found in the St. Clair Cave in Jamaica. Population estimate was done in 1970.[3]
Cuban greater funnel-eared bat	Natalus primus	100[4]	CR[4]	[4]	Maximum estimate. Only found in a single cave.[4]
Seychelles Sheath-tailed Bat	Coleura seychellensis	100[5]	CR[5]	[5]	Maximum estimate for mature individuals.[5]
Bulmer's fruit bat	Aproteles bulmerae	160[6]	CR[6]	[6]	Only one colony is known to exist.[6]
Jamaican flower bat	Phyllonycteris aphylla	250[7]	CR[7]	[7]	Colonies only at Marta Tick Cave and Stony Hill Cave.[7]
Flat-headed myotis	Myotis planiceps	250[8]	EN[8]	[8]	Maximum estimate for mature individuals.[8]
Bonin Flying Fox	Pteropus pselaphon	300[9]	CR[9]	[9]	Maximum estimate.[9]
Arnhem leaf-nosed bat	Hipposideros inornatus	300[10]	VU[10]	[11]	Maximum estimate for mature individuals.[10]
New Georgian Monkey-faced Bat	Pteralopex taki	500[12]	EN[12]	[12]	Estimate is for mature individuals.[12]
Canary big-eared bat	Plecotus teneriffae	500 – 2000[13]	EN[13]	[13]
Livingstone's fruit bat	Pteropus livingstonii	1200[14]	EN[14]	[14]
Coastal sheath-tailed bat	Taphozous australis	1200 - 10 000[15][16]	NT[15]	[15]
New Caledonia Wattled Bat	Chalinolobus neocaledonicus	1500[17]	EN[17]	[17]	Maximum estimate from known colonies.[17]
Azores noctule	Nyctalus azoreum	2000 – 5000[18]	EN[18]	[18]
Thailand Roundleaf Bat	Hipposideros halophyllus	2500 – 10 000[19]	VU[19]	[19]
Rodrigues flying fox	Pteropus rodricensis	4000[20]	CR[20]	[20]
Kitti's hog-nosed bat	Craseonycteris thonglongyai	6600[21]	VU[21]	[21]
Ghost Bat	Macroderma gigas	7000 – 9000[22]	VU[22]	[22]
Comoro rousette	Rousettus obliviosus	7100 – 17 100[23]	VU[23]	[23]
Giant golden-crowned flying fox	Acerodon jubatus	10 000[24]	EN[24]	Unknown[24]	Rough estimate; probably no more than 20 000.[24]
Banana bat	Musonycteris harrisoni	10 000[25]	VU[25]	[25]
Pemba Flying Fox	Pteropus voeltzkowi	19 000[26]	VU[26]	[26]	Increase from a few hundred in the early 1990s.[26]
Mauritian flying fox	Pteropus niger	25 000[11]	EN[11]	[11]	Minimum estimate.[11]
New Zealand lesser short-tailed bat	Mystacina tuberculata	30 000[27]	VU[27]	[27]	Minimum estimate.[27]
Madagascan flying fox	Pteropus rufus	300 000[28]	VU[28]	[28]
Grey-headed flying fox	Pteropus poliocephalus	320 000 - 674 000[29]	VU[30]	[30]	Estimates are based on incomplete knowledge of camp location and use.[29]
Indiana bat	Myotis sodalis	387 300[31]	EN[31]	[31]	Though numbers are large compared to other bats classified as endangered, this species is listed as such due to a >50% decline over the past decade.[31]

See also

• Lists of mammals by population
• Lists of organisms by population
• List of bats

References