The most common and most likely answer to this crossword clue is the 8 letter word REDSTART
I've seen this crossword clue in Financial Times
R
E
D
S
T
A
R
T
More clues leading to the result REDSTART
- Bird’s colours sharp
- Singer's blushing debut
- Maybe cherry’s sour for bird
- Bird from street protected by shopkeeper, given lift
- Liverpool FC’s sharp winger
- Bird reportedly studied by celebrity twitcher originally
- Dealer upset to receive stone for songbird
- Revolutionary movement with wings?
- Winger studied recording before kick-off
- Bird being studied heard before dawn
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does REDSTART mean?
REDSTART noun- Any of various insectivorous ground-feeding birds, mainly of the genus Phoenicurus. Many of the species have a red tail.
- An unrelated species of warbler native to the Americas, Setophaga ruticilla