Bat Population Database (BPD)

U.S. States/Territories by Observations:
Indiana (915)    Pennsylvania (568)    Kentucky (410)    South Dakota (250)    New York (132)    Massachusetts (76)    New Mexico (70)    Arizona (53)    Maryland (53)    Wyoming (44)    Colorado (37)    Ohio (36)    Minnesota (33)    Illinois (32)    California (29)    Kansas (27)    Montana (26)    Arkansas (24)    Texas (24)    New Hampshire (18)    Iowa (17)    Utah (17)    Alabama (14)    Florida (14)    Oregon (14)    Tennessee (13)    Nevada (10)    Georgia (9)    West Virginia (9)    Michigan (8)    Oklahoma (8)    Virginia (8)    Missouri (7)    Nebraska (5)    North Carolina (5)    Louisiana (3)    New Jersey (2)    Vermont (2)    Connecticut (1)    Maine (1)    Mississippi (1)    North Dakota (1)    Wisconsin (1)   

Publications by Observations:

• Intra-cave activity of four species of bats hibernating in Kentucky (186)
• Selected aspects of the ecology of the big brown bat (Eptesicus fuscus) in Grant County, Indiana (100)
• Seasonal flight counts in three big brown bat (Eptesicus fuscus) colonies (79)
• A two year study on the effects of monthly rainfall on weight gain in the big brown bat (Eptesicus fuscus) (73)
• A 1990-1991 winter cave census for the Indiana bat (Myotis sodalis) in non-Priority I hibernacula in Indiana (51)
• Hibernacula of the endangered Indiana bat in Indiana (32)
• The nonhibernating ecology of bats in Indiana with emphasis on the endangered Indiana bat, Myotis sodalis (32)
• Population turnover in wintering bats in Indiana (30)
• A survey of bats in Wayne National Forest (28)
• Inventory of bats and bat habitat associated with caves and mines in Wyoming - Completion Report (27)
• Survival and movements of banded big brown bats (24)
• Status of cave-dwelling bats in Maryland: importance of marginal habitats (20)
• Seasonal activity of bats at an Indiana cave (20)
• Twenty-year study of Eptesicus fuscus in Minnesota (20)
• Colonial behavior of Eptesicus fuscus (18)
• Status of bats in the Gypsum Hills of south-central Kansas (17)
• Bats of the caves and mines of the Shawnee National Forest, southern Illinois (15)
• Some observations on the big brown bat in San Diego County, California (15)
• Seasonal occurrence and abundance of bats (Chiroptera) in northwestern Texas (13)
• Survey of some eastern Iowa caves for wintering bats (12)
• A survey of the populations and environmental parameters of the Indiana bat (Myotis sodalis) in Jackson and Rockcastle Counties, Kentucky (12)
• Migration in the guano bat, Tadarida brasiliensis (11)
• Bat tagging in Pennsylvania (11)
• Bats of abandoned coal mines in southwestern Indiana (10)
• Bats of Utah (10)
• Maternity roost selection and the use of bat boxes by displaced colonies of big brown and little brown bats (9)
• Mammals of the Black Hills of South Dakota and Wyoming (9)
• Preliminary observations on the cave bats of Arkansas (9)
• Organochlorine residues in three bat species from four localities in Maryland and West Virginia, 1973 (8)
• Hibernation of the big brown bat, Eptesicus fuscus, in buildings (7)
• Characteristics of artificial bat roosts in southwestern Oregon (7)
• Homing performance and homing ability in bats (7)
• Nutrient levels in guano from maternity colonies of big brown bats (6)
• Abundance and distribution of bats in the Pryor Mountains of South Central Montana and North Eastern Wyoming (6)
• A survey of bats in southeast Colorado (6)
• Factors influencing Arizona bat population levels (6)
• A three-year study of two breeding colonies of the big brown bat, Eptesicus fuscus (6)
• A six year study of big brown bat survival (6)
• Bat tagging in Pennsylvania turnpike tunnels (6)
• Bats of Azure Cave and the Little Rocky Mountains, Montana (5)
• Notes on hibernating bats in Dubuque County caves (5)
• The natural history of a summer aggregation of the big brown bat, Eptesicus fuscus fuscus (5)
• Bat boxes as alternative roosts for displaced bat maternity colonies (4)
• Mammals of Nevada (4)
• Abundance and distribution of bats in the Pryor Mountains of south-central Montana (4)
• Abandoned mine fauna of the Ouachita Mountains, Arkansas: vertebrate taxa (4)
• An endangered species survey of abandoned mine shafts in the Big South Fork National River & Recreation Area, Kentucky and Tennessee (4)
• Canine tooth wear in captive big brown bats (Eptesicus fuscus) (4)
• Distribution and ecology of the bats of southern Hidalgo County, New Mexico (4)
• Ecology of the big brown bat (Chiroptera: Vespertilionidae) in northeastern Kansas (4)
• Notes on mammals of southern Illinois (4)
• Homing instincts of two bats, Eptesicus fuscus and Tadarida mexicana (Mammalia: Chiroptera) (4)
• Some notes on Utah bats (4)
• Notes on the life histories of New England cave bats (4)
• Population changes in bats from central Arizona: 1972 and 1997 (3)
• Results of population surveys of the gray bat (Myotis grisescens) at selected caves in the Tennessee River Valley during 1997 and 1998 with results of additional project related surveys in the TVA Power Service Area (3)
• New distributional records for selected species of Kentucky mammals (3)
• Uptake of dietary PCB by pregnant big brown bats (Eptesicus fuscus) and their fetuses (3)
• Distribution of Chiroptera in western Tennessee (3)
• Bats from the Black Hills of South Dakota (3)
• Observations on hibernation of Myotis subulatus (3)
• Unusual roosting site of Eptesicus fuscus (3)
• Bats hibernating in Silica Mines in southern Illinois (3)
• An annotated checklist of Nebraskan bats (3)
• Some notes on Indiana mammals (3)
• Sex ratios of bats in Pennsylvania (3)
• Bat distribution and hibernacula use in west-central Nevada (2)
• Bats of the White and Inyo Mountains of California-Nevada (2)
• Bats of Jewel Cave National Monument, South Dakota (2)
• Foraging area, habitat use, population estimates and food habits of Rafinesque's big-eared bat in southeastern Kentucky (2)
• Bat hibernacula on Lake Superior's north shore, Minnesota (2)
• Recent records of the big brown bat, Eptesicus fuscus, in southern Florida (2)
• Mammals of the northern Texas panhandle (2)
• Natural history and geographic relationships of the Brazilian free-tailed bat in the San Luis Valley of Colorado (2)
• Use of the post-sunset glow as an orientation cue by big brown bats (Eptesicus fuscus) (2)
• Distribution, status, and ecology of endangered bats of Buffalo National River, Arkansas (2)
• Experimental feeding of DDE and PCB to female big brown bats (Eptesicus fuscus) (2)
• Reproduction, growth, and development in Myotis thysanodes and M. lucifugus (Chiroptera: Vespertilionidae) (2)
• Toxicity of dieldrin and endrin to bats (2)
• Bats: sensitivity to DDT (2)
• "Malfunction" of homing ability in bats (2)
• Effectiveness of Japanese mist nets for securing bats in temperate latitudes (2)
• Pipistrellus subflavus obscurus, Myotis keenii, and Eptesicus fuscus fuscus hibernating in a storm sewer in central Minnesota (2)
• Notes on distribution and habits of some bats from Illinois (2)
• Mammals of Kansas (2)
• A new homing record for the large brown bat (Eptesicus fuscus fuscus) (2)
• Mammals of Amelia County, Virginia (2)
• Notes on the big brown bat (2)
• The fauna of West Virginia caves (2)
• The reproductive cycles of some cave bats (2)
• Myotis subulatis leibii and Myotis sodalis in Pennsylvania (2)
• Vertebrate natural history of a section of northern California through the Lassen Peak Region (2)
• Pilot black-snake feeding on the big brown bat (2)
• The mammals of the Okefinokee Swamp Region of Georgia (2)
• Additional notes on California bats; with observations upon the young of Eumops (2)
• The fauna of Mayfield's Cave (2)
• Use of bridges as night roosts by bats in the Oregon Coast Range (1)
• Region 5 -- Bats (1)
• Bat usage and cave management of Torgac Cave, New Mexico (1)
• Black Hills Bat Project (1)
• Habitat affinities of bats from northeastern Nevada (1)
• Winter utilization of box culverts by vespertilionid bats in southeastern Texas (1)
• Status of Townsend's big-eared bat (Plecotus townsendii) at five caves in Colorado (1)
• Change in forearm curvature throughout the summer in female big brown bats (1)
• A survey of hibernating bats in Hellhole Cave, Pendleton County, WV (1)
• A survey for federally endangered bat species in abandoned mine portals in New River Gorge National River, West Virginia (1)
• Toxicity of methyl parathion to bats: mortality and coordination loss (1)
• Mammals of Arizona (1)
• Early foraging behavior of insectivorous bats in western Oklahoma (1)
• DDE in brown and white fat of hibernating bats (1)
• Bats of the Colorado Oil Shale Region (1)
• Growth and development of the eastern pipistrelle bat, Pipistrellus subflavus (1)
• First report of Brazilian free-tailed bat maternity colonies in Arkansas (1)
• Growth rates and age estimation in Eptesicus fuscus and comparison with Myotis lucifugus (1)
• An infestation of the bat bug Cimex pilosellus on an Arkansas population of big brown bats (Eptesicus fuscus) (1)
• Estimating pesticide burdens of bats from guano analyses (1)
• Behavior of the evening bat, Nycticeius humeralis, at a nursery roost (1)
• Lead concentrations: bats vs. terrestrial small mammals collected near a major highway (1)
• Noteworthy records of bats from northeastern Montana (1)
• Preliminary investigations and management of the Indiana bat (Myotis sodalis) in New York state (1)
• The bats of east Texas (1)
• Organochlorine residues in females and nursing young of the big brown bat (Eptesicus fuscus) (1)
• The occurrence, status and importance of bats in Wisconsin with a key to the species (1)
• Mammals of New Mexico (1)
• The mammals of Louisiana and its adjacent waters (1)
• Successful hand-raising of one week old bats, Eptesicus and Antrozous, by stomach catheter (1)
• Distribution of mammals in Colorado (1)
• Mammals from southwestern North Dakota (1)
• Hibernating bats of the Black Hills of South Dakota. I. Distribution and habitat selection (1)
• A concentration of Myotis keenii at caves in Ohio (1)
• Notes on a collection of bats taken by mist-netting at an Indiana cave (1)
• Life history data on some southwestern Myotis (1)
• Mammals of Mobile and Baldwin Counties, Alabama (1)
• Warm-season changes in fat content of Eptesicus fuscus (1)
• Long-tailed weasel preys on big brown bats (1)
• Flight speeds of five species of Vespertilionid bats (1)
• Summer netting of bats at a cave in Pennsylvania (1)
• Fringe-tailed bat in northeast New Mexico (1)
• Notes on the distribution and reproduction of some bats from Kansas, with remarks on incidence of rabies (1)
• Tolerance and initial metabolic response to ammonia intoxication in selected bats and rodents (1)
• Myotis sodalis in caves near Watertown, New York (1)
• Predation on cave bats by the pilot black snake (1)
• Cave flooding and mortality in bats in Wind Cave, Kentucky (1)
• Notes on some Nebraskan bats (1)
• Notes on the sex ratio of hibernating bats (1)
• Distribution and taxonomy of mammals of Nebraska (1)
• Distribution and status of the Chiroptera of Indiana (1)
• Notes on Plecotus rafinesquii (1)
• The caves of northwest Texas (1)
• Growth of juvenile big brown bats (1)
• Notes on homing of two species of bats, Myotis lucifugus and Eptesicus fuscus (1)
• Breeding colonies of four species of bats of Indiana (1)
• Myotis austroriparius in central Kentucky (1)
• New records of ectoparasites on bats in west Texas (1)
• A free-tailed bat found in Ohio (1)
• A northernmost record of Plecotus rafinesquii Lesson (Mammalia, Chiroptera) (1)
• A record of homing in the big brown bat (1)
• Another instance of bat versus ant (1)
• Notes on the mammals of Jackson County, Indiana (1)
• Hibernation of the big brown bat (1)
• Some bat records from southeastern Indiana (1)
• Myotis subulatus leibii in eastern New York (1)
• Adjacent roosts of Eptesicus and Myotis (1)
• New records for bats in Oklahoma (1)
• Occurrence of the red bat, Lasiurus borealis, in caves (1)
• Aspects of a population study of cavern-dwelling bats (1)
• Mammals of the San Gabriel Mountains of California (1)
• The screech owl as a predator on the big brown bat (1)
• Status of Nycticeius humeralis in Indiana (1)
• New records of bats from northeastern Kansas, with notes on the bat chigger, Euschongastia pipistrelli (Acarina, Trombiculidae) (1)
• Mammal survey of southeastern Pennsylvania (1)
• Report on the mammals of the Black Mesa Region, Oklahoma (1)
• Notes on mammals of Thomas County, Georgia, with two state records (1)
• Mammals of a limited area in Maryland (1)
• Notes on the natural history of the bat, Myotis yumanensis, in California, with a description of a new race (1)
• Notes on the long-legged bat (Myotis volans) at Old Fort Tejon and vicinity, California (1)
• Notes on bats from eastern West Virginia (1)
• Carnivorous activities of big brown and pallid bats (1)
• Mammal notes from Highland County, Florida (1)
• The Acadian bat in New Jersey (1)
• Notes on Arkansas mammals (1)
• Notes on the life histories of some Utah mammals (1)
• The LeConte free-tailed bat in Alabama (1)
• Notes on the mammals of Rowan and adjacent counties in eastern Kentucky (1)
• Mammals of northwestern Arkansas (1)
• Mammals of the Ruby mountains region of north-eastern Nevada. (1)
• The mammals of southern Nevada (1)
• Notes on bats collected in Arizona during the summer of 1933 (1)
• Hibernating bats in Minnesota (1)
• Notes on some cave bats of Kansas (1)
• Cave life of Kentucky (1)
• The insect food of the big brown bat (1)
• Large brown bat in Michigan (1)
• Myotis grisescens and Myotis sodalis in Tennessee and Alabama (1)
• Mammals of New Mexico (1)
• A biological survey of Alabama (1)
• Contributions to the life-history of the California mastiff bat (1)
• Some Californian experiences with bat roosts (1)
• Some habits and sensory adaptations of cave-inhabiting bats (1)

• Food habits of the hoary bat (Lasiurus cinereus) during spring migration through New Mexico (2009)
• Summary and analysis of the U.S. Government Bat Banding Program (2008)
• Late-seasonal activity and diet of the evening bat (Nycticeius humeralis) in Nebraska (2008)
• Evaluation of morphological indices and total body electrical conductivity to assess body composition in big brown bats (2008)
• Mammal inventories for eight National Parks in the Southern Colorado Plateau Network (2007)

• Bat Population Database
• Causes and Consequences of Bat Fatalities at Wind Turbines
• Conservation Studies of Long-Nosed Bats in New Mexico
• Ecological Investigations of White-Nose Syndrome in Bats
• Ecology of Virus Transmission in Commensal Bats
• Rocky Mountain Center for Conservation Genetics and Systematics
• Using Genetics Tools to Obtain Information about the Biology of Summer Roosting Bats