Common chiffchaff point, appears to be used to advertise an established territory and contact the female, rather than as a paternity guard strategy. Beyond the core territory, there is a larger feeding range which is variable in size, but typically ten or more times the area of the breeding territory. It is believed that the female has a larger feeding range than the male. After breeding has finished, this species abandons its territory, and may join small flocks including other warblers prior to migration. The male common chiffchaff returns to its breeding territory two or three weeks before the female and immediately
The Genius of Birds The Genius of Birds The Genius of Birds is a 2016 book by nature writer Jennifer Ackerman. "The Genius of Birds" highlights new findings and discoveries in the field of bird intelligence. The book explores birds as thinkers (contrary to the cliché "bird brain") in the context of observed behavior in the wild and brings to it the scientific findings from lab and field research. New research suggests that some birds, such as those in the family corvidae, can rival primates and even humans in forms of intelligence. Much like humans, birds have enormous brains relative to the rest of