Based on the 'Dark and light interiors' blog post, what were the key findings regarding Swift preference for nest box interior color and chamber usage? Specifically, state the number of pairs found in painted versus unpainted boxes, and the ratio of Swifts using left versus right chambers.
Navigate to actionforswifts.blogspot.com. Locate and read the 'Dark and light interiors' blog post. Identify the number of Swift pairs found in painted versus unpainted nest boxes. Identify the ratio of Swifts using left versus right chambers. Synthesize these findings.
State that 8 pairs were found in painted boxes and 8 in unpainted ones. State that Swifts used the left chamber versus the right chamber in a ratio of 9:7.