We asked our readers to send in their best pictures on the theme of "monochrome ... Theresa Bennett: "To help our garden butterflies, I planted a patio tub with cosmos seeds and was rewarded ...

During my last visit, I think I saw more blue morphos than I ever have before. While my younger sister took pictures of me and the butterflies, alternating between her phone and digital camera, it ...

Haiyong Cai (China) notices the shimmery blue colours of eros blue butterflies basking among the vegetation. While wandering through an alpine meadow, Haiyong spotted a patch of blue among the grass.

We asked our readers to send in their best pictures on the theme of "monochrome". Here is a selection of the photographs we received from around the world. Ian Maggiore: "Early morning frost in my ...