In article , Inge Jones
writes
In article ,
says...

Oh, it's the sparrows then? I wondered who was doing the damage, not
having caught anyone at it! But we now have a handful of sparrows after
some 8 or more years' absence, so I don't mind sacrificing a few
primroses! Wonder why, though - they aren't eaten or removed, just
decapitated.

Are primrose seeds poisonous to baby sparrows? The only practical
result for pulling off a flower head and not doing anything with it
would be to stop the seeds forming.

A sparrow doesn't have enough foresight for that. ISTR reading that it
might be connected with getting the nectar at the base of the flower wen
food is short in spring.
--
Kay Easton

Edward's earthworm page:
http://www.scarboro.demon.co.uk/edward/index.htm