Modeling Extinction Risk of Endemic Birds of Mainland China

Table 3

Estimated parameters of alternative evolutionary models which have been fitted onto the evolution of extinction risk for endemic birds of China.

Models	Log-likelihood	𝑞	Parameters	AIC
Delta	−63.12	−1.49	0.527	128.24
LinearChange	−63.11	−0.617	2.27	128.22
TwoRate	−60.73	−0.47	B = 0.013, E = 72.20	125.46
Null	−63.17	1.09	—	126.34

𝐵: breakpoint; 𝐸: the second rate; 𝑞 denotes the equal transition rate among the categories of extinction risk. AIC: Akaike Information Criteria.