Newer research has shown an additional factor: water and air temperatures play a big part in fish survival. Fish, especially cold-water fish like trout, are more likely to die when they are caught and brought up into warm summer waters.
They’re unlike any other of Utah’s birds. These tiny birds range from 2¾ to 4 inches tall and have some of the highest metabolisms in the world, with heart rates around 1,250 beats per minute. At night, their hearts slow to between 50 and 180 beats per minute, which enables them to tolerate some below-freezing temperatures.
Research data also shows there are numerous reasons for the decline in kestrel numbers, but they can all be summed up by one word: civilization.
The day was gorgeous, the weather was great, the scenery was interesting and colorful and there were plenty of deer for us to watch through binoculars. Fortunately, it’s a big area and we were able to find some wildlife close enough to photograph.