Old screw

I am not a very well budgie tonight,MrsPuff is a little unwell to. My throat feels like what the top of this srew looks like pretty rough. I was a bit concerned because of the sore neck and head ache. Taken some high dosage Echinacea and seems to be helping. MrsPuff has gone to the spare bed because of the coughing, snorting, snoring and grunting,I haven't heard her make any of these noises at all. Blip box time tonight,this is an old railway screw which would have been used to secure the railway line to the wooden sleepers.