How is it that birds continue to sing, even on the gloomiest of days?
It is a little known yet widely established fact that birds are made up of various receptive connecting points aligning them in cosmic ways invisible to the human eye. For instance, a set of unseen strings radiate from within a bird's body to the tips of their wings. On overcast days, birds have been known to flap their wings to stimulate their heart muscles which in turn inspire birdsong. Intuitively, the birds seem to know that clouds and gloom are temporary occurrences...strings and songs defiant.
I hope this answers your question.