Appendix A. Photographs of bills of Eulampis jugularis, flowers and inflorescences of Heliconia species on St. Lucia, West Indies, orientation of birds during feeding visits to heliconias, and measurements of bill and flower chords and angles.

Photographs of bills of Eulampis jugularis, flowers and inflorescences of Heliconia species on St. Lucia, West Indies, orientation of birds during feeding visits to heliconias, and measurements of bill and flower chords and angles.