On public (and other) buildings which have extensive glass walls, you sometimes see the silhouettes of flying birds affixed to the glass.
My understanding is:
- This is intended to deter birds from flying into the glass and hurting themselves
- Officials doing this is an implicit (i.e. unspoken) but obvious claim, that this method is effective (i.e. it is a claim that, and/or is the result of a claim that, affixing bird silhouettes to glass is effective at helping to deter birds from flying into the glass)
Is this a sufficient "notable claim" for the main site -- can I just state this observation, and ask what evidence for the claimed effect?
Or must I find some explicit, wordy claim on that subject?