| Total Records: | |||
| Date | Location | Species | ObsID |
|---|---|---|---|
| 1926/08/00 | Howard, Maryland | Eptesicus fuscus | 6584 |
| 1927/06/28 | Howard, Maryland | Eptesicus fuscus | 6585 |
| 1940/08/10 | Baltimore, Maryland | Myotis septentrionalis | 23525 |
| 1941/00/00 | Baltimore, Maryland | Myotis septentrionalis | 23439 |
| 1941/01/00 | Baltimore, Maryland | Myotis septentrionalis | 23445 |
| 1941/01/00 | Baltimore, Maryland | Pipistrellus subflavus | 23448 |
| 1941/01/00 | Baltimore, Maryland | Eptesicus fuscus | 23449 |
| 1941/03/03 | Baltimore, Maryland | Myotis septentrionalis | 23435 |
| 1941/03/30 | Baltimore, Maryland | Myotis septentrionalis | 23436 |
| 1941/03/30 | Baltimore, Maryland | Pipistrellus subflavus | 23447 |
| 1941/04/01 | Baltimore, Maryland | Myotis septentrionalis | 23437 |
| 1941/04/19 | Baltimore, Maryland | Myotis septentrionalis | 23438 |
| 1941/10/04 | Prince Georges, Maryland | Eptesicus fuscus | 24125 |
| 1941/10/15 | Prince Georges, Maryland | Eptesicus fuscus | 24126 |
| 1942/00/00 | Baltimore, Maryland | Myotis septentrionalis | 23440 |
| 1943/00/00 | Baltimore, Maryland | Myotis septentrionalis | 23441 |
| 1943/01/26 | Baltimore, Maryland | Pipistrellus subflavus | 23446 |
| 1944/00/00 | Baltimore, Maryland | Myotis septentrionalis | 23442 |
| 1945/00/00 | Baltimore, Maryland | Myotis septentrionalis | 23443 |
| 1946/00/00 | Baltimore, Maryland | Myotis septentrionalis | 23444 |
| 1951/06/25 | Montgomery, Maryland | Eptesicus fuscus | 6490 |
| 1951/07/14 | Montgomery, Maryland | Eptesicus fuscus | 6491 |
| 1951/07/28 | Montgomery, Maryland | Eptesicus fuscus | 6492 |
| 1952/06/10 | Montgomery, Maryland | Eptesicus fuscus | 6493 |
| 1952/07/07 | Montgomery, Maryland | Eptesicus fuscus | 6494 |
| 1964/06/00 | Garrett, Maryland | Myotis lucifugus | 19272 |
| 1972/04/00 | Baltimore, Maryland | Eptesicus fuscus | 11269 |
| 1973/04/00 | Prince Georges, Maryland | Myotis lucifugus | 21927 |
| 1973/04/00 | Prince Georges, Maryland | Eptesicus fuscus | 21929 |
| 1973/04/03 | Washington, Maryland | Eptesicus fuscus | 24145 |
| 1973/04/03 | Washington, Maryland | Myotis lucifugus | 24146 |
| 1973/04/03 | Washington, Maryland | Pipistrellus subflavus | 24147 |
| 1973/04/26 | Prince Georges, Maryland | Eptesicus fuscus | 24157 |
| 1973/04/26 | Prince Georges, Maryland | Myotis lucifugus | 24158 |
| 1973/05/00 | Cecil, Maryland | Myotis lucifugus | 21928 |
| 1973/05/02 | Cecil, Maryland | Myotis lucifugus | 24160 |
| 1973/06/27 | Montgomery, Maryland | Eptesicus fuscus | 24127 |
| 1973/07/11 | Prince Georges, Maryland | Eptesicus fuscus | 24162 |
| 1973/07/11 | Prince Georges, Maryland | Myotis lucifugus | 24163 |
| 1973/10/02 | Prince Georges, Maryland | Eptesicus fuscus | 24159 |
| 1973/10/03 | Cecil, Maryland | Myotis lucifugus | 24161 |
| 1973/10/31 | Washington, Maryland | Eptesicus fuscus | 24148 |
| 1973/10/31 | Washington, Maryland | Myotis lucifugus | 24149 |
| 1973/10/31 | Washington, Maryland | Pipistrellus subflavus | 24150 |
| 1974/05/20 | Prince Georges, Maryland | Eptesicus fuscus | 6226 |
| 1974/06/10 | Prince Georges, Maryland | Eptesicus fuscus | 6227 |
| 1974/06/22 | Montgomery, Maryland | Eptesicus fuscus | 24128 |
| 1974/07/16 | Prince Georges, Maryland | Eptesicus fuscus | 24129 |
| 1975/05/21 | Prince Georges, Maryland | Eptesicus fuscus | 24131 |
| 1975/05/21 | Prince Georges, Maryland | Eptesicus fuscus | 24132 |
| 1975/05/21 | Prince Georges, Maryland | Eptesicus fuscus | 24133 |
| 1975/05/21 | Prince Georges, Maryland | Eptesicus fuscus | 6228 |
| 1975/05/23 | Prince Georges, Maryland | Eptesicus fuscus | 6229 |
| 1976/05/24 | Prince Georges, Maryland | Eptesicus fuscus | 24134 |
| 1976/05/24 | Prince Georges, Maryland | Myotis lucifugus | 24135 |
| 1976/06/03 | Prince Georges, Maryland | Myotis lucifugus | 24130 |
| 1976/07/06 | Cecil, Maryland | Myotis lucifugus | 24359 |
| 1977/12/00 | Garrett, Maryland | Myotis lucifugus | 16738 |
| 1977/12/00 | Garrett, Maryland | Pipistrellus subflavus | 16739 |
| 1977/12/00 | Washington, Maryland | Pipistrellus subflavus | 16781 |
| 1977/12/00 | Washington, Maryland | Eptesicus fuscus | 16782 |
| 1977/12/00 | Washington, Maryland | Eptesicus fuscus | 16786 |
| 1977/12/00 | Washington, Maryland | Pipistrellus subflavus | 16793 |
| 1977/12/00 | Washington, Maryland | Eptesicus fuscus | 16794 |
| 1978/11/15 | Washington, Maryland | Eptesicus fuscus | 24136 |
| 1978/11/15 | Washington, Maryland | Myotis lucifugus | 24137 |
| 1978/11/15 | Washington, Maryland | Pipistrellus subflavus | 24138 |
| 1978/12/00 | Garrett, Maryland | Myotis lucifugus | 16740 |
| 1978/12/00 | Garrett, Maryland | Pipistrellus subflavus | 16741 |
| 1978/12/00 | Garrett, Maryland | Eptesicus fuscus | 16742 |
| 1979/07/16 | Cecil, Maryland | Myotis lucifugus | 24139 |
| 1979/12/00 | Garrett, Maryland | Myotis lucifugus | 16722 |
| 1979/12/00 | Garrett, Maryland | Pipistrellus subflavus | 16723 |
| 1979/12/00 | Garrett, Maryland | unknown unknown | 16724 |
| 1979/12/00 | Garrett, Maryland | Myotis lucifugus | 16743 |
| 1979/12/00 | Garrett, Maryland | Myotis septentrionalis | 16744 |
| 1979/12/00 | Garrett, Maryland | Pipistrellus subflavus | 16745 |
| 1979/12/00 | Garrett, Maryland | unknown unknown | 16746 |
| 1979/12/00 | Garrett, Maryland | Myotis lucifugus | 16733 |
| 1979/12/00 | Garrett, Maryland | Eptesicus fuscus | 16734 |
| 1979/12/00 | Allegany, Maryland | Myotis lucifugus | 16749 |
| 1979/12/00 | Allegany, Maryland | Myotis leibii | 16750 |
| 1979/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16751 |
| 1979/12/00 | Allegany, Maryland | Eptesicus fuscus | 16752 |
| 1979/12/00 | Allegany, Maryland | Myotis lucifugus | 16754 |
| 1979/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16755 |
| 1979/12/00 | Allegany, Maryland | unknown unknown | 16756 |
| 1979/12/00 | Washington, Maryland | Myotis lucifugus | 16795 |
| 1979/12/00 | Washington, Maryland | Pipistrellus subflavus | 16796 |
| 1979/12/00 | Washington, Maryland | Pipistrellus subflavus | 16787 |
| 1979/12/00 | Washington, Maryland | Eptesicus fuscus | 16788 |
| 1979/12/00 | Washington, Maryland | unknown unknown | 16789 |
| 1979/12/00 | Washington, Maryland | Myotis lucifugus | 16783 |
| 1979/12/00 | Washington, Maryland | Eptesicus fuscus | 16784 |
| 1979/12/00 | Washington, Maryland | Pipistrellus subflavus | 16778 |
| 1979/12/00 | Allegany, Maryland | Myotis septentrionalis | 16760 |
| 1979/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16761 |
| 1979/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16764 |
| 1979/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16770 |
| 1979/12/00 | Allegany, Maryland | Eptesicus fuscus | 16771 |
| 1979/12/00 | Allegany, Maryland | unknown unknown | 16772 |
| 1979/12/00 | Allegany, Maryland | Eptesicus fuscus | 16774 |
| 1979/12/00 | Allegany, Maryland | unknown unknown | 16775 |
| 1979/12/00 | Washington, Maryland | Myotis lucifugus | 16800 |
| 1979/12/00 | Washington, Maryland | Pipistrellus subflavus | 16801 |
| 1979/12/00 | Washington, Maryland | unknown unknown | 16802 |
| 1980/00/00 | Garrett, Maryland | multiple species multiple species | 23623 |
| 1980/00/00 | Garrett, Maryland | multiple species multiple species | 23624 |
| 1980/00/00 | Allegany, Maryland | multiple species multiple species | 23625 |
| 1980/00/00 | Allegany, Maryland | multiple species multiple species | 23626 |
| 1980/00/00 | Allegany, Maryland | multiple species multiple species | 23627 |
| 1980/00/00 | Allegany, Maryland | multiple species multiple species | 23628 |
| 1980/00/00 | Washington, Maryland | multiple species multiple species | 23629 |
| 1980/03/00 | Howard, Maryland | Eptesicus fuscus | 24351 |
| 1980/03/00 | Prince Georges, Maryland | Eptesicus fuscus | 24352 |
| 1980/12/00 | Garrett, Maryland | Myotis lucifugus | 16725 |
| 1980/12/00 | Garrett, Maryland | Pipistrellus subflavus | 16726 |
| 1980/12/00 | Garrett, Maryland | unknown unknown | 16727 |
| 1980/12/00 | Allegany, Maryland | Myotis lucifugus | 16757 |
| 1980/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16758 |
| 1980/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16753 |
| 1980/12/00 | Garrett, Maryland | Eptesicus fuscus | 16735 |
| 1980/12/00 | Garrett, Maryland | Myotis lucifugus | 16747 |
| 1980/12/00 | Garrett, Maryland | Pipistrellus subflavus | 16748 |
| 1980/12/00 | Washington, Maryland | Pipistrellus subflavus | 16803 |
| 1980/12/00 | Washington, Maryland | unknown unknown | 16804 |
| 1980/12/00 | Allegany, Maryland | Eptesicus fuscus | 16776 |
| 1980/12/00 | Allegany, Maryland | unknown unknown | 16777 |
| 1980/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16773 |
| 1980/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16765 |
| 1980/12/00 | Allegany, Maryland | Eptesicus fuscus | 16766 |
| 1980/12/00 | Allegany, Maryland | unknown unknown | 16767 |
| 1980/12/00 | Allegany, Maryland | Myotis leibii | 16762 |
| 1980/12/00 | Allegany, Maryland | Pipistrellus subflavus | 16763 |
| 1980/12/00 | Washington, Maryland | Pipistrellus subflavus | 16779 |
| 1980/12/00 | Washington, Maryland | Eptesicus fuscus | 16780 |
| 1980/12/00 | Allegany, Maryland | unknown unknown | 16759 |
| 1980/12/00 | Washington, Maryland | Eptesicus fuscus | 16785 |
| 1980/12/00 | Washington, Maryland | Myotis lucifugus | 16790 |
| 1980/12/00 | Washington, Maryland | Eptesicus fuscus | 16791 |
| 1980/12/00 | Washington, Maryland | unknown unknown | 16792 |
| 1980/12/00 | Washington, Maryland | Myotis lucifugus | 16797 |
| 1980/12/00 | Washington, Maryland | Pipistrellus subflavus | 16798 |
| 1980/12/00 | Washington, Maryland | Eptesicus fuscus | 16799 |
| 1981/12/00 | Allegany, Maryland | Eptesicus fuscus | 16768 |
| 1981/12/00 | Allegany, Maryland | unknown unknown | 16769 |
| 1981/12/00 | Garrett, Maryland | Myotis septentrionalis | 16736 |
| 1981/12/00 | Garrett, Maryland | Eptesicus fuscus | 16737 |
| 1981/12/00 | Garrett, Maryland | Myotis lucifugus | 16728 |
| 1981/12/00 | Garrett, Maryland | Myotis septentrionalis | 16729 |
| 1981/12/00 | Garrett, Maryland | Pipistrellus subflavus | 16730 |
| 1981/12/00 | Garrett, Maryland | Eptesicus fuscus | 16731 |
| 1981/12/00 | Garrett, Maryland | unknown unknown | 16732 |
| 1983/06/00 | Prince Georges, Maryland | Myotis lucifugus | 24140 |
| 1983/06/00 | Prince Georges, Maryland | Eptesicus fuscus | 24141 |
| 1985/05/00 | Prince Georges, Maryland | Myotis lucifugus | 24142 |
| 1985/07/00 | Prince Georges, Maryland | Myotis lucifugus | 24143 |
| 1985/08/00 | Prince Georges, Maryland | Myotis lucifugus | 24144 |
| 1994/06/01 | Prince Georges, Maryland | Eptesicus fuscus | 14641 |