![]() ![]() We found that birds trained to respond to vocalizations produced in either fall or spring learned to discriminate at the same rate as birds trained to respond to pseudorandomized stimuli, suggesting that none of the groups demonstrated category learning, relying instead on rote memorization. ![]() To determine if the chick-a-dee call varies acoustically across seasons in a predictable manner, we conducted an operant go/no-go discrimination task that examined black-capped chickadees’ ability to categorize calls produced in two different seasons: fall and spring. For instance, flock communication could be more important in the fall than in the spring, and food type and availability change according to season. As seasons change, the meaning of the call may also change. This call serves multiple functions, including food location, flock communication, and predator alarm. While black-capped chickadees (Poecile atricapillus) primarily produce fee-bee songs in spring, they produce chick-a-dee calls year-round with call production peaking in the fall. ![]()
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