Soon tulips were beginning to show up in different colors as growers tried to breed them specifically for colors which would make them even more valuable.
很快，随着种植者们试图培育出更具有价值的颜色，开始有不同颜色的郁金香出现。
But parrots are seen as bigger threat because they breed faster and nest in high-up spots.
但是鹦鹉却被视作更大的威胁，因为它们繁殖的更快，巢建的更高。
What's worse from a scientific standpoint: banded and unbanded penguins respond differently to climate changes, with the banded birds showing up even later to breed when food is scarce.
从科学角度看，更为糟糕的是：受绑和未受绑的企鹅对于气候变化的反应各不相同，当食物很少时，受绑的企鹅表现出晚育特征。
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