Alas for this Charmer

Alas for this Charmer

Observation - Alas for this Charmer. Description: Got home early, looked out at birds on and around feeder.All present and correct, nothing out of place.Quickly upstairs to tie flies, one hour or so later back downstairs and there under one of the feeders is this Goldfinch apparently asleep.So grabbed ca

Got home early, looked out at birds on and around feeder.All present and correct, nothing out of place.Quickly upstairs to tie flies, one hour or so later back downstairs and there under one of the feeders is this Goldfinch apparently asleep.So grabbed camera and crept out to take some photographs.Even when I lifted him up he only woke up long enough for me to take a pic then he turned his head back in to his feathers and alas woke no more.He was dead within three hours.Does anyone have any suggestions as to what caused his demise?I have a couple of ideas myself but I Won't colour the waters with them now.