Species Listed During Calendar Year 1973

Note: This report counts every species ever listed as threatened or endangered under the Endangered Species Act. The status of a species may have changed since it was listed; therefore, if the number of species listed each calendar year is added up, that total will be different than the total number of species currently listed under the Endangered Species Act. Experimental populations and foreign species are not included, but distinct population segments (DPS) are counted, as are species listed due to similarity of appearance and joint US/foreign listings. The effective date (as given in the Federal Register notice) is used to determine in which Calendar Year a species is counted.

Lead
Agency
Common Name Scientific Name Current
Status
Initial
Listing
Date
Mammals
FWS Prairie dog, Utah (Entire) Cynomys parvidens Threatened 6/4/73
FWS Puma (=cougar), eastern (Entire) Puma (=Felis) concolor couguar Endangered 6/4/73
Birds
FWS Nightjar, Puerto Rican (Entire) Caprimulgus noctitherus Endangered 6/4/73
FWS Crane, Mississippi sandhill (Entire) Grus canadensis pulla Endangered 6/4/73
FWS Sparrow, Santa Barbara song () Melospiza melodia graminea Extinction 6/4/73
Amphibians
FWS Salamander, desert slender (Entire) Batrachoseps aridus Endangered 6/4/73
Fishes
FWS Darter, Okaloosa (Entire) Etheostoma okaloosae Threatened 6/4/73