David Perpinan / Two Hyacinth macaws (Anodorynchus hyacinthus) in a tree, Pantanal, Mato Grosso do Sul, Brazil.

Franco Banfi / Reef under the surface of shallow waters, at sunset, covered with hard corals, Brush Coral (Acropora hyacinthus) Robust Acropora (Acropora robusta) and other Acropora, Maldives, Indian Ocean

Franco Banfi / Reef under the surface of shallow waters, at sunset, covered with hard corals, Brush Coral (Acropora hyacinthus) Robust Acropora (Acropora robusta) and other Acropora, Maldives, Indian Ocean

Solvin Zankl / Table top coral {Acropora hyacithus} Sulawesi, Indonesia

Juan Carlos Munoz / Pyrenean squill (Scilla lilio-hyacinthus), Ibarra, Orozko, Biscay, Basque Country, Spain. March.

David Perpinan / Pair of Hyacinth macaws (Anodorynchus hyacinthus) flying from a tree, Pantanal, Mato Grosso do Sul, Brazil.

David Perpinan / Two Hyacinth macaws (Anodorynchus hyacinthus) calling and flapping wings in a tree, Pantanal, Mato Grosso do Sul, Brazil.

Ashley Cooper / Hyacinth fields near Keukenhof, Lisse, Netherlands.

Franco Banfi / Reef covered with hard coral (Acropora hyacinthus) with signs of disease and bleaching, Tubbataha Reef Natural Park, UNESCO World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines

Ernie Janes / Mediterranean spurge (Euphorbia characias) and Hyacinths in flower growing in container pots, Norfolk, England, UK, March.

Ernie Janes / Hyacinths (Hycinthus) in flower in container, Norfolk, England, UK, March.

Ernie Janes / Hyacinths (Hycinthus) in flower in container, Norfolk, England, UK, March.