Virburnam Opulus (Pentandria Trigynia), from an album (Vol.IX, 81); Water elder or wild guelderrose. 1776 Collage of coloured papers, with bodycolour and watercolour, on black ink background
Mary Delany, Ixia Crocata collage, 1778 (source).
Might be a nice starting point for the sparrow. Graphic yet painterly and very adaptable in illustrator :)
Mary Delany botanical collage: Verbascum Phoeniceum, 1778
Mary Delany, Galanthus Nivalis, Single Snowdrop, 1777
2 Apartments Under 30 Square Metre – One Light, One Dark
blueberries drawing | Blueberry, Drawing by Cindy Robbins 2002
Lilac Watercolor Clipart card floral elements by OctopusArtis