The herring / lesser black back gull group has a ring distribution around the northern hemisphere. Differences between adjacent forms in the ring are fairly small but by the time the circuit is complete the end members- herring & l.b.b gull are clearly different species. For more see the excellent book "The ancestors tale " by Richard Dawkins, or wikipedia, also evolutionfairytale or Talkorigins
The herring / lesser black back gull group has a ring distribution around the northern hemisphere. Differences between adjacent forms in the ring are fairly small but by the time the circuit is complete the end members- herring & l.b.b gull are clearly different species. For more see the excellent book "The ancestors tale " by Richard Dawkins, or wikipedia, also evolutionfairytale or Talkorigins
zytigon 5 months ago
its a beautiful gull, thank you for posting
mariojragucci2 2 years ago