starlings Archives

Non-Native Species and the Natural Balance - Burmese Python — Burmese Python

People often disturb the delicate balance of the natural world by transporting plants, animals, or insects from one region to another, either accidentally or intentionally. When non-native species have no predators to keep them in check, or they outcompete local species for food or space, the natural balance is disrupted. The consequences are often negative.

The list of known cases of destruction caused by non-native species is extensive. Researchers say that introducing outsiders has led to 60% of local bird, mammal, and reptile extinctions. Over the past decade, Florida has spent an estimated six million dollars to control Burmese pythons. These large snakes were brought into the U.S. and sold as pets. When they grew too big to handle, people released them into the Florida Everglades. Without natural enemies in America, these snakes have been preying on local wildlife, including alligators, domestic dogs, cats, and even cattle.

A single Japanese knotweed plant brought into the U.S. can grow rapidly, has no natural predators here, and can crowd out other species, damaging buildings and drainage systems. This plant has appeared in 43 states, including Alaska. Even viruses and bacteria have been introduced from other parts of the world. COVID-19 is one example, but there are lesser-known cases too. For instance, the West Nile virus came into the U.S. from Uganda.

The number of invasive non-native species is huge. It includes Asian carp, parachuting Joro spiders, kudzu, giant hornets, sea lampreys, zebra mussels, South African red weevils, red swamp crayfish, and starlings, among others.

The U.S. government spends over three billion dollars annually on managing invasive species, and more than $150 billion yearly on agricultural damages. Globally, the bill reaches $423 billion. All of this stems from humans acting as poor stewards of the natural resources God has given us.

Reference: The American Legion Magazine for August 2025, pages 20 -26.

Flocking Behavior or Murmuration — *Murmuration of Common Starlings*

One of the most incredible sights we frequently see in the fall of the year is the flocking behavior of birds. Starlings are one of the most visible examples, with tens of thousands forming a massive cloud of flapping wings. The term “murmuration” comes from the fact that thousands of wings flapping at once give a murmur-like sound.

National Geographic magazine (October 2021, pages 26-28) published great pictures of a starling murmuration. The magazine estimates that in their photographs, there are “tens of thousands of starlings … a quarter-mile wide, and several hundred feet tall.” The article asks the question, “What is the purpose of murmurings?” They conclude that it’s a way to avoid predators or gain a feeding advantage. Since starlings don’t eat while migrating, the magazine speculates that starling murmurations offer an advantage over the falcons that feed on starlings.

A bigger question for anyone who observes the flocking behavior of thousands of birds is how they avoid hitting each other. It seems that built into every bird is a genetically imprinted instinctive drive to synchronize their wing beat, reducing the chance of a collision. How do they navigate? I have seen a whole flock make a quick 90-degree turn in which every bird seems to have instructions of when to turn and how far.

Besides the murmuration of birds, we see flocking behavior in many forms of life. Geese fly in flocks, and salmon move upstream in groups. Insects swarm around a hive or nest to protect the hive. Wolves form a pack to bring down a large animal. There are negative swarms such as insect swarms that eat themselves out of food reserves and a bison herd running off a cliff.

Our understanding of the genetic drives designed into living things is very primitive. However, it is clear that, at least in some situations, the grouping of animals presents advantages. Watching starlings move like a giant cloud and hearing their synchronized wing beats, one has to be amazed at the design and complexity God put into all of His creatures. We are continually reminded in Romans 1:20 that “the invisible things of Him from the creation of the world are clearly seen, being understood by the things that are made … so the (unbeliever) is without excuse.”