Many accounts are incomplete although new information is being added continuously.
Errors do occur.
Users are cautioned to refer back to the original cited source to assess completeness and correctness before using the information. Web updates are intermittent, not continuous, therefore some dynamic information such as legal status may not be absolutely current. A Black Skimmer was spotted on the west side of Elephant Butte Reservoir in 1993. American Ornithology Union. Supplement to the Auk.