When there at least 2 or 3 inches wide and 1 and a half long.
A butterfly release is where live butterflies are released into the air for their beauty and grace. The butterflies will also fly out into the environment where they will help the bees pollinate as well as help the depleting population of butterflies.
Butterflies in Heat - 1979 was released on: USA: 1979
Social Butterflies - 2009 was released on: USA: January 2009
Beautiful Butterflies - 1913 was released on: USA: March 1913
If there is an actual physical result from "butterflies" you should really see a doctor.
Chasing Butterflies - 2009 was released on: USA: 22 December 2009
Butterflies and Bees - 1917 was released on: USA: 28 January 1917
First Look - 2010 Butterflies was released on: USA: 2010
The Butterflies - 2010 was released on: USA: 6 February 2010 (Oxford Film Festival)
Science Times - 1997 Monarch Butterflies was released on: USA: 2001
Butterflies Wake - 2011 was released on: USA: 23 June 2011 (Charleston, South Carolina)
It will vary very widely on the species of butterfly. Some butterflies will release a scent from their admen, others will slowly flap their wings, and some will sit there with their wings wide open.