Notches in the wings of male fork-tailed flycatchers may broadcast their availability to mates
Juan Jose Arango / VWPics / Alam
As male fork-tailed flycatchers zip around, their wings can produce a high-pitched trilling. New research shows these whistles have dialects and may be used for communication.
Fork-tailed flycatchers (Tyrannus savana) have two subspecies: one that migrates annually between northern and southern parts of South America and another that resides year-round in the north of the continent. Valentina Gómez-Bahamón at the Field Museum in Illinois and her colleagues studied the two populations.
They collected and analysed audio and …
You may also like
-
COVID Vaccine Tracker
-
New Bariatric Portion Plate Helps Bariatric Patients Reach Their Goals
-
2021 preview: how soon will a Covid-19 vaccine normalize life?
-
Official British statisticians had concerns about the trend in the Covid-19 poll
-
NASA’s probe on Mars may feel the ground shake when rovers land in 2021