The Guardian - Cryptic crossword No 26,004 - Jul 19 2013

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Clues Answers
After a little rotation, sharpen the file DATASET
Backing musician attaches wing on rook, say SIDEMAN
Battle to plug deficit at American research facility LOSALAMOS
Bear with blackbird BROOK
Bunting runs out of energy FLAGS
Catch criminal flicking a tree creeper LIANA
Catches footloose spouse climbing pole ENTRAPS
Charlie shoots wildly at a pair of anchors COHOSTS
Chose to be decorated with feathers, parrot's head included PLUMPED
Crow shot inside court BOAST
Dipper left in Scottish stream LADLE
Exercise book found in ancient battlefield rocks science PETROLOGY
Flower from Colorado, white one in field COWSLIP
Grouse about main part with legend PTARMIGAN
Hawk is close to finding headless fish WARMONGER
Insect crosses screen over swallow BELIEVE
Clues Answers
It follows a heron out of river to breed BEGET
It's self-evident — Douglas here wants a kiss first AXIOM
Large bird covers one with masonry STONEWORK
Lark calling beneath arched fold of rock ANTICLINE
Local bosses catch doctor propped up in Rising Sun LANDLORDS
Locates it among uneven steps SITES
Old king finds duck among some swans HEROD
Oriental seabird follows stormy sea EASTERN
René Magritte's behind purge ENEMA
Reptiles moving around end of Pompey's colonnade PERISTYLE
Seal is backing a short breather SIGIL
Shorten it — otherwise it's most unpleasant THORNIEST
They turn hummingbirds jaws without resistance OFFBREAKS
Turkey might be let out of oven FREERANGE
Undressed by coffee counter, being shameless BAREFACED
Uniform with medal and large cluster of flowers UMBEL