Bicolor Mch 9 8:35 peter peter peter from large oak at edge of clearing - same from SW and ture tur tur from NW Silently mate worked along fence - singer restless hopping from branch to branch rarely picking at some object. Crest erect but "top" feathers simply not so long as those of atricistatus hence more posterior feathers most in evidence. Singer moved back into large post oak S of fence while mate in blackjack oak 100 ft W & N of fence. Singer gave peta-peta and a single note lower than "zip" as though calling to mate. Latter, however, flew 60 ft to scrubby tree to SW and I joined her there. "She" worked around peripheral twigs a yard above ground then dropped to gummy sack or grass then up into tree. Mate had gone W & "she" followed. 8:44 one bird more E from tree W coughed & gave vehement "ret ret ret" very hoarse over over. Presently mate flew into adjacent oak. "Scolding" bird did not carry crest particularly erect, i.e. more like inornatus. This bird also gave note trip as did mate. There may have been a boundary dispute although no song or calls from W at 8:44. I lost track of the birds in writing notes. From 8:55 until 9:28 I walked through the Lamott's woods and heard no Atmice. I hopped a fence to E and began working along a firebreak (= roadway). No Atmuse calls so I worked N into area across fence from where I had been yesterday.