Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
plūmĭger, ĕra, ĕrum, adj. [pluma-gero], feather-bearing, feathered (post-Aug.): plumigeri anseres, Plin. 10, 22, 27, § 53: series, i. e. pennae, Prud. Cath. 3, 44.