a soft warbling sound April 10, 2018 In Link “Suspected to mate for life, Raven pairs serenade each other with these gentle “comfort sounds” while bonding.” Listen to the sound and a 1.3 min story about the warble #fauna. corvids. relationships And once you know the world Eiko Kadono awarded the 2018 Hans Christian Andersen Award Related Posts hourly comics day 2016 study drawing resources Calliope Collects: Lights and Lanterns Does it matter if children’s books deliver inaccurate science?