Readers do not depart they grow quieter, season by season.

Engagement decay, by quarter after sign-up share opening any issue · n = 18,420

Fig. xii — engraved & hand-coloured after the Cardinalia field survey, 2024.

This is the Wilson Ornithology Plate design system, applied by Curio Design — a design-style library for AI agents. Full Wilson Ornithology Plate guide → designbycurio.com/learn/wilson-songbird-plate-1808