Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015 Black and yellow mud dauber, Columbia Ca, 11 June 2015