From:	IN%"sher@ukrcsm.kiev.ua"  "Igor Sheremetyev"  4-OCT-2006 01:56:37.21
To:	IN%"Applied-ethology@sask.usask.ca"
CC:	
Subj:	bird songs

Hi!
 
as it known some species of birds have own, specific songs, while other
species (like starlings) compose the sound fragments of other species or
even environmental sounds. Is there any idea concerning why some species
have no own song?
 
Thank you for any comment.
 
Sincerely,
 
Igor

From:	IN%"liyucai5432773@163.com"  "liyucai5432773"  4-OCT-2006 19:29:29.79
To:	IN%"applied-ethology@sask.usask.ca"  "=?UNKNOWN?B?777777777777?="
CC:	
Subj:	RE: bird songs

Hi Igor
 In a specific environment they can imitate a bird's songs to get along w=
ith the imitated birds, then they may win more food. This may be due to e=
volution and selection.
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I know a little about it. :)
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sincerely,
Yucai
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=B7=A2=BC=FE=C8=CB:"Igor Sheremetyev"=20
=B7=A2=CB=CD=CA=B1=BC=E4:2006-10-04 15:57:49
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=D6=F7=CC=E2:bird songs




Hi!
=20
as it known some species of birds have own, specific songs, while other s=
pecies (like starlings) compose the sound fragments of other species or e=
ven environmental sounds. Is there any idea concerning why some species h=
ave no own song?
=20
Thank you for any comment.
=20
Sincerely,
=20
Igor=