Antique English Watercolour, 1850

Watercolour, pen and ink with gilt on paper depicting a book, butterflies and a long-tailed Whydah (?) bird, English, circa 1850, in 19th century gilt frame.  Minor damage to the frame as can be seen in the last two photos
Height 24cm  (9.5 inches)
Width 19cm  (7.5 inches)