Banks 1960 Zonotrichia leucophrys atricapilla 4, Apr.13 near Ouida, Contra Costa Co., Calif. - Home of O.P. Pearson Sheaths on distal and posterior cranial area. Entire central with 5 or less grown feathers, few or more without soze trace of sheath. 3 rst. inner midl sec. cov. w/sheath,-1/2 grown. 3 minor sec. & greater covs. also w/sheath, in length of feather >>8>>9. Other wing some; lower coverts also w/sheath. Most of upper back + a little of lower with sheaths. Grown 54-C. Band 24-180327. Cage worn condition makes it difficult to tell if feathers old or new. On crown, sheaths only anterior to eyes, + these just broken. All facial tract, incl. supercilium, with sheaths. Ventral tract with sheaths anterior to only. Cranial w/sheaths posterior + distal - 1 aut. No sign that lack rectrices were molted. A few under sec. covs. w/sheath and rem's, or upper covs. Cannot tell if they have been replaced. Sheaths on dorsum only on aut. 1/3 , not on neck's feathers about 1/2 grown. Bird caught this AM by Pearson. Crown 54-C. Band 24-180328. Most yellow feathers in sheath, as are rest + neck, & more posterior now fully grown. No sheaths on rt. wing. On @ left, sec. 8 with sheath, 9 gone. No coverts in sheath. No sign of lack-rectrix change. Ventral central molt only anteriorly. Apr.12 6 Log Drive, Ouida, Contra Costa Co., Calif. - Head, tail, & wing of a bird. Central rectrices appear to have been replaced feathers No sheaths on any wing feathers, or remiges or coverts. Crown (5C) has sheaths on only a few feathers of aut. 1/3.