The word birdwatches is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 23
Highest Scoring Words With Friends™ Plays In The Letters birdwatches
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Seven Letter Word Alert: (89 words)
abiders, achiest, airbeds, aitches, arcwise, aridest, ascribe, astride, baiters, barites, batched, batches, bathers, bawdier, bearish, bedirts, bestrid, bewitch, birched, birches, birthed, bracted, braised, breadth, breaths, carbide, cashier, catbird, chaired, charted, chaster, cithers, crashed, credits, cristae, dacites, dearths, decabit, decarbs, directs, disrate, ditcher, ditches, dithers, drastic, hardest, hastier, hatreds, herbist, raciest, radices, rawhide, rebaits, rebatch, rebaths, redacts, rethaws, rewatch, richest, scabrid, scathed, scribed, seabird, shadier, shirted, sidebar, sidecar, steward, strawed, swathed, threads, tirades, trashed, waisted, waiters, wariest, watched, watcher, watches, wearish, webcast, witched, witcher, witches, withers, wraiths, wreaths, writhed, writhes