The s. counterpart to BCCH and found in similar habitats. Behavior is also the same as BCCH. Songs and calls similar, averaging higher-pitched, sweeter, and slightly faster. ID: From BCCH with care though most can safely be separated by range. Slightly smaller and not as fluffed-up or rotund. Its shorter tail is usually held narrower at tip. Bill slightly shorter. Noticeably less frosty and contrasty than BCCH. Most importantly, greater coverts are gray not black, contrasting less with narrower pale fringes. This pattern is also similar in the tertials and outer tail feathers where there is less contrast but is not so easy to determine. Flanks average duller, rear cheek grayer, and lower border to bib neater, but there is large variation and overlap in these features.