Lupine. Left tree and bird returned while I was within 25 yds - returned 2 min after I left. This between 405 & 420 Went to no.7 and found pair flying into oak ferns as I approached - they were very close together as though in pursuit (play). A low cry heard given on the wing was heard - One bird returned to tree top - other in N side of tree. After 5 min, a bird seems came in from north and in a few seconds leave again. The bird on top of tree then moved its north part of tree and in a minute probably the same bird came back to this spot. I approached - bird on top heard singing - flew to 3 on wires. I went to ear and wrote note at from 450 - 530 - Did not appear in five mins - day windy but mild temperature - 2nd clouds in PM. Birds may have sought shelter from wind in the oak - yet wind strong on top of oak where they pushed. Left 5.05 Arrived at no.6 at 5.20 - Bird flushed as I came from 5 - but did not leave trees. 2 cat uproars and