I admit it. I know I’m not supposed to, but of all the little ones, I have a favorite. Don’t tell the others, please.
I know that all the babies are adorable, but this one has a special place in my heart. The population of the radiated tortoise (Astrochelys radiata) has dropped by half in the last ten years. They have been wiped out of most of their range, so captive breeding programs are of critical importance. She’s the second one my zoo has hatched.
I call this one “she” because she was incubated as a female. Many reptiles have what is called temperature dependent sex determination. When the egg is first laid, the embryo within has no gender at all. The temperature at which it is incubated has an impact on whether they develop into boys or girls. Keepers can often produce the gender they need by altering the temperature at which they incubate the eggs. With this species of tortoise, higher temperatures usually yield more females. Lower temperatures tend to create males.
Here she is with her older sibling who was hatched in July. I have no idea whether the older one is male or female. Its egg incubated outdoors for a bit, so it was subject to unknown temperatures. Radiographs in a few years can tell if we’ve got a boy or a girl.
One thing I really enjoy about this baby is her personality. She is all go. I have no good recent pictures of her because she won’t sit still. From a biological standpoint, her curiosity isn’t a good thing because she might get eaten, but in captivity, it’s positively delightful.
I’ll be back on Monday full of my tales of adventure. And hopefully with some new pictures. Have a great weekend!