BS: Evolving bird song

Subject: BS: Evolving bird song
From: Donuel
Date: 05 Apr 18 - 08:28 AM

In the last 10 years I have heard the nesting birds in our window boxes change their song.

They have gone from a distinct chee ba gah chee ba gah to
cheat a-bow cheat a-bow.

http://www.loe.org/shows/segments.html?programID=15-P13-00026&segmentID=7


I miss the cheese burger

Subject: RE: BS: Evolving bird song
From: Mrrzy
Date: 05 Apr 18 - 08:30 AM

Above the line? This is interesting and musical.

Subject: RE: BS: Evolving bird song
From: Donuel
Date: 05 Apr 18 - 08:51 AM

Chee ba ga always sounded like John Belushi on sat nite live giving orders to his short order cook Dan Akroyd.

I learned some female birds can not sing but instead have brain areas devoted only to judging song.

Subject: RE: BS: Evolving bird song
From: Murpholly
Date: 06 Apr 18 - 04:56 AM

Research undertaken in England has discovered birds change their songs and become louder in urban settings - especially London - presumably to announce their territory and find a mate over all the traffic noise.

Subject: RE: BS: Evolving bird song
From: Mrrzy
Date: 06 Apr 18 - 09:41 AM

Imagine dinosaur dawn, how loud it must have been!

Subject: RE: BS: Evolving bird song
From: robomatic
Date: 06 Apr 18 - 02:29 PM

I love nature, either in the wild, or in its ventures into urban settings. BUT:

I strongly feel that if we could see into the nature that existed in the dinosaur era, our eyes, ears, and all other sensory apparati would be gobsmacked by our perceptions of beauty, awe, and mystery.

There was more oxygen in the air, then. Dragonflies had 60 centimeter wingspans.

Subject: RE: BS: Evolving bird song
From: Pete from seven stars link
Date: 08 Apr 18 - 04:02 PM

Can you imagine a dinosaur scene / where only you think / are beasts that have been / then to you surprise / right before your eye / did you expect to see / a duck fly by !