Boom; the carders of also with fresh, heavy plumage. The sweet claver is mostly passed, but some still in bloom and the two are cutting lots of it, even stalking as their a period and drying up. Set 4 members at dawn 8 a.m. and by 11 had 2 trees more in afternoon -- not breaking a twig despite a recent joint to cures and drier now -- no standing water on the area. Lots of huge parasitic wasps digging holes into the sand and stuffing house? flesh? Down them. I'm a.m. helped sample vegetation and dissected trees. In pairs there appeared to be more tree activity, so Martha and I did a count of fresh burrows -- only about 35, but such lots more trees present. They were singing and digging right up until dark but stopped then. Of their three overt activities: singing, excavating, and feeding, they never do more than one at any one time. An excavating tree never stops to eat, etc. The singers never emerge, but I think they sing from open burrows. Found 2 flying owl burrows on opposite sides of a steep dune, and 2 owls in attendance, but no good pellets nearby. A caprimulgid few over the area at dusk, and a flock of spur-winged geese raided for a time just off of the dune.