Ooo, that’s tricky. I think the most interesting thing I ever discovered personally was that some of the birds I used to work with used to go on holiday for the winter, and some of them used to stay home all winter. During the next summer, those that stayed home had loads more babies than those that had gone on holiday: maybe they were too tired from all the flying?!
I was studying American mink for a long time β these are small carnivores that look a bit like brown ferrets. It turns out that these animals are pretty incredible hunters β they hunt on land like a fox, they climb trees like a cat, and they dive like an otter. Whatβs really interesting is that these animals swim and dive a lot, even though they are very skinny, and their fur is not waterproof β so they should lose heat very easily. I found that the smaller the mink, the more it dives β and the very small females are able to make even 80 dives in a row in winter. Pretty impressive for a scrawny animal like that!
I once worked on a venomous mammal which we thought was incredibly rare. Once we started to learn how to spot it we realised it was not as rare as we had imagined but still very vulnerable to extinction
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