I once birded with a gentleman who was very color blind but could id a bird instantly by shape, size and movement. He like many males was unable to hear the high pitch calls. Wyleen High Amherst, Portage CO #################### You received this email because you are subscribed to the Wisconsin Birding Network (Wisbirdn). To UNSUBSCRIBE or SUBSCRIBE, use the Wisbirdn web interface at: //www.freelists.org/list/wisbirdn. To set DIGEST or VACATION modes, use the Wisbirdn web interface at: //www.freelists.org/list/wisbirdn. Visit Wisbirdn ARCHIVES at: //www.freelists.org/archives/wisbirdn.