Share this on WhatsApp If a hummingbird has ever visited your garden, you’ve no doubt seen it flit from flower to flower, hovering mid-air, as it sips on nectar. That activity requires plenty of energy. So hummingbirds need a LOT of nectar to feed their hungry metabolisms.  “In fact some of them probably drink two … Continue reading High-Elevation Hummingbirds Evolved a Temperature Trick