In article , Nick Maclaren
writes

In article ,
Janet Baraclough writes:
|
| Assuming you're in the UK, and it's deciduous, possibilities include
| harmless crab apples, cherry, sorbus, hawthorn species, none of them
| poisonous and birds will take most of the fruit as soon as they are
| ripe.

As far as I know, the only members of the woody Rosacaea in the UK
with poisonous fruit are various 'laurels', and all are evergreen.
Can anyone think of a counter-example, even including all native,
naturalised or garden species?

But are we sure it's Rosaceae? The OP didn't specify
--
Kay
"Do not insult the crocodile until you have crossed the river"