Tobar Rainbow Humming Top Traditional Spinning Toy

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The top is a focal element and metaphysical symbol in the movie Inception (2010), directed by Christopher Nolan and starring Leonardo DiCaprio.

When performing the Humming Top, the users thrust their body forward through midair while sticking their legs outward to attack foes (often while spinning), thereby increasing their horizontal speed to gain distance.The high metabolic rate of hummingbirds – especially during rapid forward flight and hovering – produces increased body heat that requires specialized mechanisms of thermoregulation for heat dissipation, which becomes an even greater challenge in hot, humid climates. Two genera of Ricinid lice, Trochiloecetes and Trochiliphagus are specialized on them, often infesting 5-15% of their populations.

Song system nuclei in the hummingbird brain are similar to those songbird brains, but the hummingbird brain has specialized regions involved for song processing. The bee hummingbird ( Mellisuga helenae) – the world's smallest bird – evolved to dwarfism likely because it had to compete with long-billed hummingbirds having an advantage for nectar foraging from specialized flowers, consequently leading the bee hummingbird to more successfully compete for flower foraging against insects. Functional art tops have become collectibles built using varied techniques in metal-working, glass-working, and wood-working.Within the same geographic region, hummingbird clades coevolved with nectar-bearing plant clades, affecting mechanisms of pollination. Some modern tops are kept perpetually in motion by spinning magnetic fields from a special ground plate. Dozens of hummingbird species live year-round in tropical mountain habitats at high altitudes, such as in the Andes over ranges of 1,500 metres (4,900ft) to 5,200 metres (17,100ft) where the partial pressure of oxygen in the air is reduced, a condition of hypoxic challenge for the high metabolic demands of hummingbirds.

Scut Farkas and the Murderous Mariah" in Wanda Hickey's Night of Golden Memories and Other Disasters. The giant hummingbird's wings beat as few as 12 times per second, [150] and the wings of typical hummingbirds beat up to 80 times per second.Coevolution of the sicklebill beak curve facilitates both nectar feeding and pollination of long tubular Centropogon flowers.