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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  Hummingbird Tattoos Png Hd
  Format: PNG
  Resolution: 290x306
  Size: 75.7KB
  Downloads: 463
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  Hummingbird Picture
  Format: PNG
  Resolution: 1800x1500
  Size: 1.1MB
  Downloads: 410
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  Watercolor Art Painting Drawing Hummingbird Download HQ PNG
  Format: PNG
  Resolution: 733x491
  Size: 237.4KB
  Downloads: 303
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  Tattoo Henna Mehndi Mandala Bird Hummingbird
  Format: PNG
  Resolution: 577x890
  Size: 370.5KB
  Downloads: 276
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  Tattoo Tattoos Black-And-Gray Transparent Hummingbird Free PNG HQ
  Format: PNG
  Resolution: 500x500
  Size: 104.4KB
  Downloads: 201
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  Flying Hummingbird Free HQ Image
  Format: PNG
  Resolution: 798x800
  Size: 223.7KB
  Downloads: 100
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  Watercolor Flower Hummingbird Download Free Image
  Format: PNG
  Resolution: 969x620
  Size: 486.7KB
  Downloads: 100
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  Watercolor Hummingbird Free Clipart HQ
  Format: PNG
  Resolution: 601x634
  Size: 226.3KB
  Downloads: 99
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  Pic Flying Silhouette Hummingbird HD Image Free
  Format: PNG
  Resolution: 2130x2304
  Size: 846.1KB
  Downloads: 98
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  Silhouette Black Photos Hummingbird Free Clipart HD
  Format: PNG
  Resolution: 1769x1265
  Size: 47.4KB
  Downloads: 98
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  Flying Black Hummingbird Free PNG HQ
  Format: PNG
  Resolution: 1027x631
  Size: 25.6KB
  Downloads: 97
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  Silhouette Black Hummingbird Free Download Image
  Format: PNG
  Resolution: 512x512
  Size: 11.0KB
  Downloads: 97
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  Flying Black Hummingbird Download HQ
  Format: PNG
  Resolution: 960x570
  Size: 29.8KB
  Downloads: 96
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  Watercolor Vector Hummingbird Download HD
  Format: PNG
  Resolution: 702x516
  Size: 58.3KB
  Downloads: 96
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  Flying Silhouette Hummingbird Free HD Image
  Format: PNG
  Resolution: 512x512
  Size: 4.5KB
  Downloads: 95
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  Flying Colorful Hummingbird Free PNG HQ
  Format: PNG
  Resolution: 512x350
  Size: 67.6KB
  Downloads: 95
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  Photos Flying Colorful Hummingbird Download Free Image
  Format: PNG
  Resolution: 1144x1517
  Size: 547.6KB
  Downloads: 95
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  Watercolor Hummingbird Free Photo
  Format: PNG
  Resolution: 733x491
  Size: 237.4KB
  Downloads: 94
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  Pic Silhouette Hummingbird PNG Image High Quality
  Format: PNG
  Resolution: 800x719
  Size: 4.1KB
  Downloads: 94
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  Turquoise Flying Hummingbird PNG Download Free
  Format: PNG
  Resolution: 1366x1295
  Size: 1.1MB
  Downloads: 94

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