The colony of Great Blue Herons found on an island in the South Fork Holston River upstream between Bluff City and South Holston Dam in Sullivan Co., TN and visited 21 April 2014 by Bob Cheers and Wallace Coffey has expanded. It appeared to have four active nest last year but Monday, 23 March 2015, it appears to have between 10 and 14 nests. The colony had been called to our attention by Rita Koder, a neighbor who had noticed it while walking along Riverside Rd. near Island Mill. Wallace Coffey Bristol, TN