Hummingbirds are birds which belong to the biological family Trochilidae and are native to North and South America. They are the smallest of birds as most the size of the species varies from 7.5–13 cm, that is, 3–5 inches in length. The smallest extant bird species is 5 cm or 2.0 inches in size and is known as bee hummingbird, which weighs less than even 2.0 g. They are called hummingbirds because of the humming sound that is generated by their beating wings, which flap at frequencies high enough to be audible to humans. They hover in mid-air at rapid rates of flapping their wings, which vary from about 12 beats per second in the largest species, to 80 excess in some of the smallest. Their top speeds exceed 15 m/s or 54 km/h (34 mph) out of those species that have been measured in wind tunnels. Apart from that, some species can even dive at speeds in excess of 22 m/s or 79 km/h (49 mph). Hummingbirds, out of all the homeothermic animals, have the highest mass-specific metabolic rate. To conserve energy in scarcity of food, and nightly when not foraging, they can go into a state similar to hibernation called torpor, slowing their metabolic rate to 1/15th of its normal rate.
In this sub category you can download free PNG images: Hummingbird Animals. In this category "Hummingbird" we have 114 free PNG images with transparent background.
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Silhouette Hummingbird HQ Image Free
Format: PNG
Resolution: 512x512
Size: 3.7KB
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Silhouette Hummingbird Download HQ
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Photos Silhouette Hummingbird Free Download PNG HD
Format: PNG
Resolution: 1296x750
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Pic Silhouette Hummingbird PNG Image High Quality
Format: PNG
Resolution: 800x719
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Downloads: 94
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Silhouette Hummingbird Download Free Image
Format: PNG
Resolution: 598x720
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Silhouette Hummingbird HD Image Free
Format: PNG
Resolution: 800x475
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Downloads: 91
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Silhouette Hummingbird Download HQ
Format: PNG
Resolution: 1064x1280
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Turquoise Flying Hummingbird Free PNG HQ
Format: PNG
Resolution: 715x653
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Turquoise Flying Hummingbird PNG Download Free
Format: PNG
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Turquoise Flying Hummingbird Download HQ
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Photos Turquoise Flying Hummingbird PNG Image High Quality
Format: PNG
Resolution: 1949x1586
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Turquoise Flying Pic Hummingbird Free Transparent Image HD
Format: PNG
Resolution: 671x700
Size: 194.6KB
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Turquoise Flying Hummingbird Download Free Image
Format: PNG
Resolution: 740x782
Size: 291.6KB
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Format: PNG
Resolution: 1029x1280
Size: 803.6KB
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Turquoise Flying Hummingbird Free Download PNG HQ
Format: PNG
Resolution: 719x566
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Flying Vector Hummingbird Free HQ Image
Format: PNG
Resolution: 512x512
Size: 4.6KB
Downloads: 53
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Flying Vector Hummingbird Free PNG HQ
Format: PNG
Resolution: 512x512
Size: 11.6KB
Downloads: 48
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Flying Vector Hummingbird Download HQ
Format: PNG
Resolution: 512x512
Size: 23.5KB
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Flying Vector Photos Hummingbird PNG Free Photo
Format: PNG
Resolution: 3552x2909
Size: 287.9KB
Downloads: 63
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