Difference between Song Thrush and Mavis

SONG THRUSH vs MAVIS: NOUN

A songbird in the thrush family, found across Eurasia, taxonomic name Turdus philomelos.
One of the common thrushes of Europe, Turdus musicus; the mavis or throstle, closely related to the mistle-thrush, redwing, and fieldfare.
A Eurasian and African songbird (Turdus philomelos) having brown upper plumage, a spotted breast, and a distinctive musical song.
Common Old World thrush noted for its song

Song thrush.
The European throstle or song thrush (Turdus musicus).
The song-thrush or throstle, Turdus musicus, a well-known thrush common in most parts of Europe.
Common Old World thrush noted for its song

Nuthatch, Marsh harrier, Tawny owl, Stone curlew, Mistle thrush, Brown thrasher, Ovenbird, Winter wren, Yellow warbler, Willow tit, Meadow pipit, Willow warbler, Turdus philomelos, Mavis, Throstle

Millie, Paulette, Marsha, Janie, Eleanor, Lucille, Jacky, Harriet, Arlene, Lynda, Darlene, Phyllis, Turdus philomelos, Song thrush, Throstle

Spotted flycatcher, Skylarks, Nuthatch, Marsh harrier, Tawny owl, Stone curlew, Mistle thrush, Brown thrasher, Ovenbird, Winter wren, Yellow warbler, Willow tit, Meadow pipit, Willow warbler, Throstle

Higgs, Little girl, Rhett, Judi, Short story, Small town, Gwyneth, Karla, Jennie, Marsha, Eleanor, Lucille, Harriet, Song thrush, Throstle

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We continue our farmer interviews with Geoff Mavis.
What was a Mavis supposed to act like?
Loved youngest son of Mavis and Rusty Wootton.
Just as Mavis is about to pay Jones, Rafi walks in, and Mavis offers Jones triple her fee if she murders him.