Podiceps nigricollis
Drawn from open occurrence records in and around Joshua Tree National Park, aggregated onto a 25 km grid. A cell is matched by its centre, which can sit up to 16 km outside the boundary, so this covers the surrounding country too.
Occurrence records measure where people looked and found something, which is not the same as where the animal is. This is a relative likelihood, not a probability.
Records exist for January, February, March, April, May, June, July, August, September, October, November and December. A quiet month can mean the animal was absent, or that nobody was looking.
A grid cell is a square of the map, not a sighting: 1 square of 25 km carry records for Black-necked Grebe in and around Joshua Tree National Park, and the 4,697 records behind them were collected by other people and published openly. Nothing here counts animals, and a place with more records is not always a place with more animals.
Table Mountain National Park is the atlas place where the Black-necked Grebe is recorded, with records concentrating in the United States, Spain, Belgium, Canada and France. The atlas holds about 598,000 records of the bird from 12 countries. Because its mapping is partial, the map indicates where these records cluster rather than the full range of Podiceps nigricollis.
Of the 8 species with an atlas page recorded in and around Joshua Tree National Park, the Black-necked Grebe is the 2nd most recorded.
The full atlas page, and everywhere else it is recorded