Fig. 2.

Historic trends in the population sizes of feral sheep (A) and seabirds (B) on the northern Channel Islands. (A) Historic estimates of sheep population sizes on the three largest NCI (SMI, SRI, and SCI) throughout the historic period. (B) Historic estimates of seabird population sizes. BRCO, Brandt's cormorant; CAAU. Cassin's auklet; DCCO, double-crested cormorant; PECO, pelagic cormorant; PIGU, pigeon guillemot (Cepphus columba); WEGU, Western gull (Larus occidentalis); XAMU, Xantus's murelet.