I have attached an improved windows ico file which replaces the existing file in 'share/chirp.ico'. This ico contains the additional image sizes necessary for windows to properly display it as an application icon.

This file was generated from the original chirp png and does not alter the artwork in anyway; it contains the following sizes: 16x16, 24x24, 32x32, 64x64, 128x128, 256x256.