Water barriers reduce bird song sharing far more than equivalent land distance

Evidence

Local populations try to preserve song types as true dialects. This effect degrades with distance or because of an important barrier. Investigations carried out by Morton (1987) in the Carolina wren (Thryothorus ludovicianus) have demonstrated that individuals at the same site share 66 % of their songs (range, 49.5–89.5 %) with a negative linear correlation between shared songs and distance, but males resident on islands share only 20 % of their song repertoires. The author reports that 3 km water was equivalent to 145 km in the mainland. — Almo Farina, Soundscape Ecology, 621

Categorization

• XREF: connects to: Climate change alters how far animal acoustic signals travel. — Bernie Krause and Almo Farina, Using Ecoacoustic Methods to Survey the…, 32

Broader Connections

• Climate change alters how far animal acoustic signals travel. #expands (0.75) — Bernie Krause and Almo Farina, Using Ecoacoustic Methods to Survey the…, 32