A census of avian observations in Southern California Deserts, CA 2022

A survey of all birds observed at desert sites in Southern California. Each census was conducted as a 30 minute point count. Shrubs were counted within a 20m radius around a point at each site.

本项调查针对南加利福尼亚荒漠样地内观测到的全部鸟类开展。每一次鸟类普查均采用30分钟样点计数法（point count）实施，每个样地内以调查点为中心，在20米半径范围内对灌木进行计数。