Science, Maths & Technology
Migration
...et al. (2003). What was the difference in average beak size of all adults before the drought in 1977 and the average beak size of adults that survived the drought? Before the drought, the average size of adult beaks was 9.2 mm. The average beak size of adults that survived was 9.9 mm. Explain how the average beak size of birds changed from before the drought in 1977 to...