Do humming-birds fly backwards?

Humming Birds: Pollination Facts and Fancy

Birds Fly. Why Can't I?

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How Do Birds Sing?

Ecological differences amoung four genera of Phthiraptera infesting south-eastern Brazilian humming-birds.

“Space is blue and birds fly through it”

Quantum mechanics is not about ‘quantum states’: it is about values of physical variables. I give a short fresh presentation and update on the relational perspective on the theory, and a comment on its philosophical implications. [Paper presented to meeting on “Foundations of quantum mechanics and their impact on contemporary society”, held at The Royal Society in London on 11–12 December 2017;...