15 June 23 Baykin Springs, Jasper Co., Texas Up at 0450. After quick breakfast into field, first stopped to check nest with egg. Still only one egg (Aimophila aestivalis). Then went over to open pine - clad hillside to watch at nest with four young. Dick going back to other open pine areas to try to collect Pine-woods Sparrows. Spent until 1045 here with only short break when Dick came to report that he lost camp in mad dash after a Red-cockaded Woodpecker. While he went back to successfully hunt for that I stayed on to obtain more data on feeding rates. Birds seemed still disturbed by my presence, but not nearly as yesterday. Today's rates are probably much closer to normal. On way back to camp stopped several times to play tape recorder & try to lure male aestivalis in. Were successful twice but only managed to collect one. Also saw another 2-plumaged Red-cockaded Woodpecker near top of 75 foot pine. One of A. aestivalis collected probably has a territory adjacent to pair with nest + 1 egg - making 4 pair + may account for some of singing to N of territory which I attributed to O# (being a long way off. Hard to tell for sure. Back out at 1530 to collect more aestivalis. Recorder ran out of power after we had one on. Went to nest with young. Collected 2 #4 + 3 of the young. Probably killed the # - other young escaped. Back to camp for short swim, prepared specimens, had supper, finished notes & prepared to leave for south Texas in the morning.