Loggerhead Shrikes Impaling Prey
Shrikes have been called “butcher birds” for their habit of impaling their prey (insects, small rodents, reptiles or birds) on thorns, barbed wire or other sharp projections. They do it for several reasons. It helps them to tear the flesh into bite sized pieces, they use it as a method of caching (storing) their food and it helps them to survive eating the toxic lubber grasshopper because the toxins within the insect degrade to harmless substances within a couple of days. I had never seen or photographed this behavior, or evidence of it, until this summer when I did both several times. In the first three photos below, this juvenile Loggerhead Shrike is practicing this instinctive behavior but the bird apparently isn’t very skilled at it yet as it had some difficulty impaling the dragonfly on the short thorn just below the insect. In the first image the bird seems to be trying to decide which of several thorns to use for this grisly task. Preparing to impale the dragonfly Impaling the dragonfly on a thorn The dragonfly has been impaled, though a little off-center. In this case the bird didn’t wait long to begin eating the prey. Here it has torn off the head and the front part of the abdomen with one pair of wings attached and is swallowing them. As you can see, the rest of the insect is still impaled on the thorn. Soon after this shot was taken the shrike removed the rest of the dragonfly from the thorn, flew with…