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					Originally Posted by Raven  They work together and announce food sources...and the dinner bell gets rung...
 
 many times i have noticed when filling feeders
 how the calls go out alerting others to the new cache.
 ~  when out in Cal....
 
 one  day  i hiked way up into the mountains with a backpack
 ...my lunch and a quality twenty pound bag of bird seed
 of a mixed variety
 and carefully selected a spot...  of  smooth rocks and trees...
 and not a single bird to be seen or heard anywhere.
 
 the perfect conditions........
 
 i carefully placed it in every crevice imaginable especially in trees
 and then spread the rest out in the open in a circle then i ate my lunch
 and took a short nap...  and hour and a half passed and nothing was seen or heard.
 
 Then one small Bird happened by...
 and rather than just eat....it flew up higher in a tree and started calling
 and that brought more birds and then more birds called....
 
 soon there was more than fifty...of many different species
 and they were having a ball  and i listened as each type made there dinner bell call
 bringing in more of the same.
 
 I've been doing this type of experiments for my whole life.
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 what about the mushroom experiments