Gallus gallus is a domesticated bird known as the chicken which is believed to have first bred in southeast Asia. Ever since Darwin, we have known that the chicken originated in southeast Asia, although the exact details of which one or more of several possible jungle fowls is the primal form has been debated. The idea that the existence of chicken is the contribution of more than one wild species has been on the table for a very long time. Notice the yellow legs on this chicken. If you pluck out the feathers, you will find the skin to be yellow as well. But if you go find, say, a crow, and pluck its feathers, it will be greyish in colour. The gist of this is that some birds are yellow while some are not.
There is a gene that is expressed in certain tissues that produces an enzyme that cleaves the carotenoid molecules that provide the yellow colour. You get a yellow bird (depending on other factors we shall ignore) if there is no functional copy of this gene. In short, it is confirmed by the new research that previously thought the red jungle fowl, Gallus gallus, is ancestral to the modern chicken, as Darwin suspected. But this research also suggests that another bird, the grey jungle fowl, Gallus sonneratii, also contributed to the chicken's genome, providing the yellow color we see on this chicken's legs.

In this sub category you can download free PNG images: Chicken Food. In this category "Chicken" we have 108 free PNG images with transparent background.

  • Chicken Wings Free Transparent Image HQ PNG Image
    Chicken Wings Free Transparent Image HQ
    Format: PNG
    Resolution: 1234x1064
    Size: 2.4MB
    Downloads: 74
  • Photos Chicken Wings Download HQ PNG Image
    Photos Chicken Wings Download HQ
    Format: PNG
    Resolution: 820x435
    Size: 194.8KB
    Downloads: 95
  • Chicken Pic Wings Free Clipart HD PNG Image
    Chicken Pic Wings Free Clipart HD
    Format: PNG
    Resolution: 900x546
    Size: 385.2KB
    Downloads: 89
  • Picture Chicken Wings Download Free Image PNG Image
    Picture Chicken Wings Download Free Image
    Format: PNG
    Resolution: 1224x570
    Size: 316.1KB
    Downloads: 90
  • Chicken Wings Free Download Image PNG Image
    Chicken Wings Free Download Image
    Format: PNG
    Resolution: 900x449
    Size: 300.9KB
    Downloads: 76
  • Picture Chicken Wings Free Transparent Image HQ PNG Image
    Picture Chicken Wings Free Transparent Image HQ
    Format: PNG
    Resolution: 634x409
    Size: 346.5KB
    Downloads: 95
  • Chicken Wings PNG File HD PNG Image
    Chicken Wings PNG File HD
    Format: PNG
    Resolution: 920x587
    Size: 499.1KB
    Downloads: 52
  • Images Chicken Wings Free Download Image PNG Image
    Images Chicken Wings Free Download Image
    Format: PNG
    Resolution: 811x450
    Size: 702.2KB
    Downloads: 79
  • Chicken Fried Wings PNG Free Photo PNG Image
    Chicken Fried Wings PNG Free Photo
    Format: PNG
    Resolution: 900x386
    Size: 509.3KB
    Downloads: 67
  • Chicken Fried Wings Free Download PNG HQ PNG Image
    Chicken Fried Wings Free Download PNG HQ
    Format: PNG
    Resolution: 835x498
    Size: 437.9KB
    Downloads: 85
  • Chicken Fried Wings HD Image Free PNG Image
    Chicken Fried Wings HD Image Free
    Format: PNG
    Resolution: 1773x826
    Size: 1.8MB
    Downloads: 62
  • Chicken Fried Wings PNG Image High Quality PNG Image
    Chicken Fried Wings PNG Image High Quality
    Format: PNG
    Resolution: 816x543
    Size: 407.6KB
    Downloads: 44
  • Chicken Fried Wings Download HQ PNG Image
    Chicken Fried Wings Download HQ
    Format: PNG
    Resolution: 900x900
    Size: 402.2KB
    Downloads: 62
  • Chicken Fried Wings Free Transparent Image HD PNG Image
    Chicken Fried Wings Free Transparent Image HD
    Format: PNG
    Resolution: 860x567
    Size: 546.2KB
    Downloads: 94
  • Chicken Fried Wings Free Clipart HD PNG Image
    Chicken Fried Wings Free Clipart HD
    Format: PNG
    Resolution: 1890x1890
    Size: 1.3MB
    Downloads: 61
  • Chicken Fried Pic Wings HD Image Free PNG Image
    Chicken Fried Pic Wings HD Image Free
    Format: PNG
    Resolution: 765x390
    Size: 415.8KB
    Downloads: 97
  • Picture Chicken Fried Wings Free Download PNG HD PNG Image
    Picture Chicken Fried Wings Free Download PNG HD
    Format: PNG
    Resolution: 500x515
    Size: 276.5KB
    Downloads: 46
  • Chicken Fried Wings Free Clipart HQ PNG Image
    Chicken Fried Wings Free Clipart HQ
    Format: PNG
    Resolution: 900x725
    Size: 463.1KB
    Downloads: 100
  • Picture Chicken Fried Wings Free Clipart HQ PNG Image
    Picture Chicken Fried Wings Free Clipart HQ
    Format: PNG
    Resolution: 1001x1001
    Size: 907.8KB
    Downloads: 80
  • Chicken Fried Wings Free Download PNG HD PNG Image
    Chicken Fried Wings Free Download PNG HD
    Format: PNG
    Resolution: 1000x1000
    Size: 765.7KB
    Downloads: 82

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