Mammals and Birds!

There are far more ectotherms (cold-blooded animals) than endotherms (warm-blooded animals) on Earth.

With the exception of mammals and birds, most life forms rely on their surroundings and behavior to regulate their internal temperature, a process known as thermoregulation.

Fish, reptiles, and amphibians, with very few exceptions, are considered ectotherms. In this picture, you can see two of my favorite endotherms: a South African Giraffe and a Secretary Bird.

Have a great week!

Technical data: Canon R6 with RF lens f4-6.3/24-240mm | ISO 100 | 1/500 sec | f6.3 | EV +0 | 240mm | WB 6500K | AV Mode | Image cropped to 15% of the original size.

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