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Digital Tobago |
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Digital Photography |
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By Bob Brent |
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I Home I Digital Photography I Wildlife I About/Contact I Site Map I |
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AVIFAUNA INDEX : |
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Avifauna A - Z : Copper-rumped Hummingbird |
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Order : Apodiformes |
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Family : Hummingbirds (Trochilidae) |
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Name : Copper-rumped hummingbird (Amazilia tobaci) |
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Length : 10 cm ( 4 in ) |
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The Copper-rumped Hummingbird is iridescent green with a copper - bronze lower back and has white tufts at the thighs, and a straight bill. Both sexes being similar. It is an aggressive Hummingbird and will chase off any other Hummingbird from it’s feeding territory and will attack any bird it considers a threat to it’s brood, regardless of size. It’s nest is a small cup of plant-down usually place on a small branch. It ranges from suburban gardens and open countryside to sparse woodland and forest edges up to 600 metres ( 2000 ft ). |
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The Apodiformes are made up of two distinct groups of aerial masters, the Swifts (Apodi) and Hummingbirds (Trochili). The Swifts being split into two families True Swifts (Apodidae) and Tree Swifts (Hemiprocnidae), The Hummingbirds are one family (Trochilidae). The feet in true Swifts are weak and they are unable to perch on wires or branches but cling to a vertical surface except when nesting. Swifts drink by swooping down at the surface of a body of water and take nesting materials and prey in full flight. Most courtship rituals take place on the wing and copulation is known to take place in full flight. Tree Swifts and Hummingbirds can perch, and some species can be highly territorial and will attack vastly larger birds such as Hawks, and even mammals such as Humans. |
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Hummingbirds are only found in the Americas ranging from southern Canada and Alaska to Tierre del Fuego, including the West Indies. Some northern American species migrate thousands of kilometres south, an amazing feat for such small birds, and certain species are increasingly migrating to eastern North America due to the hanging of artificial feeders in gardens, surviving in temperatures as low as -20%C. They are capable of hovering in mid air and they are the only bird that can fly backwards. All are nectar eaters being attracted to brightly coloured flowers, mainly red, and most take insects. Some species have developed special bills adapted to specific flowers. Unlike other birds the Hummingbirds wings connect at the shoulder and they can achieve between 15 and 80 beats per second depending on the size of the bird, the larger the bird, the slower the beat. The Bee Hummingbird of Cuba and the Isle of Pines is the smallest living bird, measuring around 5.5 cm and weighing 2g. |