The cinnamon teal is the only duck which has two separate breeding populations in North America and in South America. There are many ducks, and other birds, which travel between the two continents. But the Cinnamon teal has the exact same bird in two separate groups. One migrates across North America and the other across South America. As far as anyone knows the two groups never mingle.
This is interesting because it doesn’t fit how the scientific world believes speciation works. If you have two different populations they are supposed to become two different birds. I suppose they would explain this by speculating that what was previously a single population became separated in relatively recent history. It would have to be relatively recent or else the ducks would have evolved differently.
I personally have another explanation for how it occurred. I prefer to attribute it to God’s sense of humor. No matter how wise humanity thinks they have become, God is still Lord of all. His creation is not bound by the petty explanations of humanity. Believers need to take a lesson from this. Always build into your theology, your expectations of your God, He can do whatever He wants to do.
When we begin to put a certain set of expectations on God, we fail to let Him be the boss. We cannot pin Him in to a pattern of behavior, without denying Him Lordship. We think we like predictable, and if we were big enough to understand Him, God would be the ultimate in consistency. But we are not capable of understanding Him, and to us he appears to be wild, unpredictable, maybe even random. Or to put that another way, just when we think we have everything figured out, God will throw us a curve.
God has chosen what is insignificant and despised in the world —what is viewed as nothing —to bring to nothing what is viewed as something, so that no one can boast in His presence. 1 Corinthians 1:28-29 (HCSB)