Try typing in "raven mad Barnaby Rudge" it'll get rid of the pop groups. The eighth one down looks promising but it doesn't answer your question.

http://www.helsinki.fi/kasv/nokol/asports.html

"He loved animals, flowers and birds, his fondness for the latter being shown nowhere more strongly than his devotion than in his devotion to his ravens at Devonshire Terrace. He writes characteristically of the death of "Grip", the first raven: "You will be greatly shocked and grieved to hear that the raven is no more.. He expired to-day at a few minutes after twelve o´clock, at noon. He had been ailing for a few days, but we anticipated no seroius result, conjecturing that a portion of the white paint he swallowed last summer might be lingering about his vitals. Yesterday afternoon he was taken so much worse that I sent an express for the medical gentleman, who promptly attended and administred a powerful dose of castrol oil.
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Were they ravens who took manna to somebody in the wilderness? At times I hope they were, and at others I fear they were not, or they would certainly have stolen it by the way. Kate is well as can be expected. The children seem rather glad of it. He bit their ankles, but that was in play." As my father was writing "Barnaby Rudge" at this time, and wished to continue his study of raven nature, another and larger "Grip" took the place of "our friend", but it was he whose talking tricks and comical ways gave my father the idea of making a raven one of the characters in this book. My father´s fondness for "Grip" was, however, never transferred to any other raven, and none of us ever forgave the butcher, whom we all held in some way responsible for his untimely taking off.