There are now 3 adult males and 1 adult female Purple Martins at the new Rush Lake site!  All four of the birds were interested in the T-14; they didn't pay much attention to the gourds.  They were easily able to enter and exit the WDC entrances with ease.  It appears there is a pair of tree swallows interested in the gourd rack.  One of the male martins dive bombed the tree swallows.