The most common and most likely answer to this crossword clue is the 6 letter word ROOSTS
I've seen this crossword clue in The Times
R
O
O
S
T
S
More clues leading to the result ROOSTS
- Marsupials circling stone to find places to rest
- Occupies branch of friends’ shop opening after setback
- Jumpers being passed round — hush — they could be what they sleep in
- Animals that hop across street to find resting places
- Here chickens and Australians sit around discontentedly …
- Birds finally settling in bits of trees
- Resting places at one corner of Rajkot have nothing, nothing on street on Sunday
- Ferret’s going around small hen houses
- Seconds into Alex Haley's saga, settles in
Buddy explains!

The straight part
We know that "places to rest" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case places to rest = roosts.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 ROOSTS mean?
ROOSTS noun- The place where a bird sleeps (usually its nest or a branch).
- A group of birds roosting together.
- A bedroom
- The inner roof of a cottage.
- (of birds or bats) To settle on a perch in order to sleep or rest
- To spend the night
- A tidal race.
- To rout out of bed; to rouse
- To harass, to treat in a rough way.
- To arrest
- To drive strongly