Paris Mch 29. Spring Creek, 6 1/2 mi. ENE Skidmore, Bee Co, Texas Clearing, sunny, wind from NW to 12 mph. I drove to a creek crossing about 1 mile N of the house, arriving at 7:30. Large liveoak tree spaced widely along the creek, smaller liveoaks and mesquite - brush in uplands. Soil sandy. About 7:40 I heard a fieldmouse call 'dut dut dut' and watched a pair fly across a clearing crossed by pipeline and roadway. One bird (flying W) was followed by two great catbirds and flew to a mesquite tree 18 ft high at edge of dense tangle of "blackbrush" (smoothbarked) (KLD# 417) 14 ft high. The second bird flew into a 15-ft liveoak 20 ft east. The latter (the darker crested I believe) called 'dut dut' and 'see see see' perhaps a, I stood in open. Male silent moved into 20 ft liveoak 15 ft W and caller followed but continued to call as it foraged. Male silent, foraging in twigs at periphery of tree in sunegar perhaps working on catkins which were out ~~ in that tree. I took this bird (#510, ?) its mate shifted direction on its perch and I collected it too (black nest) 8:22 fieldmouse singing from mesquite along W edge of wood lot to NW along creek peer - - - - in 5, 6, or 7 phase song (I think mate was to S along creek) Bird would shift perch frequently giving note 'sit' as he did so. 8:29 momentary pause in song. 8:31 flew S as I approached closer reason? - then vet vet - - as I approached on W side of large oak. Bird moved E into shrubs and sang 'ridick ridick' - - over 1 or until 8:36 no sign of mate yet.