Apr 21 Mayhew Creek of the white-fronted J. SUN OUT, CALM, WARM. I checked back on the area of where that J was first seen and found it possible that he was #581 taken April 20. On re-reading, I found that on April 18, that J had chestnut on the forehead as had 581 and was not pure white as I had supposed. At 9:28 I approached Tufted nest - not twitter then see si vet vet vet of adult from mesquite SE & see out chut of jaw in answer - parent fed javor low shrub branch as song keets breeks from swan road. I walked over & caught the fledgling which could not fly but hopped about in the grass. It gave a cry zeech-eeech-(squeal-like) and tried to bite my hand. I heard the parent scold vet vet vet from mesquite but could not locate her subsequently. I crossed road at 9:42 & tried to locate the other. The J sang only twice thereafter & I could not find the family group by 9:55. At the road at 10:02 I heard song peta - - not land in almes & followed - advance to W in line along road also. I followed J, located him in elm at 10:07 & watched him forage 2 min, singing infrequently then fly to elm W where he foraged - sang again at 10:12 - bird seemed to be alone. Brood of chickadees to N At 10:14 song & charge with bird to W, I thought a mockingbird. I walked W along fence to clearing & east. I saw at 10:23 a singing towhee in