Blue Herons


Back to...
Outage Menu
Animal Menu
Transmission


Blue herons are treated separetely from other flocking and roosting birds because they tend to create different types of problems. Blue herons are more likely to be involved in transmission outages than substation outages.

These are large birds with wingspans over 6 feet. Primarily fish-eaters, herons will spend hours perched motionlessly in the top branches of trees. In spite of their size, when still, they are almost invisible. Since neatness counts and eating fish is messy, they have a special patch of down they can crumble and use to clean their feathers.

Not too surprisingly, large birds tend to build large nests. Since herons re-use their nests every year, repairs and additions combine to create nests of impressive size. Unfortunately, herons have also discovered that transmission towers make ideal nesting sites. If the nest are located over insulators, herons will contaminate insulators, eventually causing tracking, arcing, and an outage. A more common problem caused by these birds is called "streaming". As herons take flight, they empty their bowls (to lighten the load, so to speak). This stream of waste will contaminate conductors, create a conductive path, and cause arching and flashovers. To make matters more difficult, these birds are also large enough to cause wingtip contacts on some distribution lines.

RECOMMENDATIONS:
If you would like some help in designing and implementing a comprehensive program for getting your animal-caused outages under control, drop us a line. Don't forget to check the Bulletin Board. If you don't see anything there to help, leave a questionand we'll post it. Be sure to check the Product Catalog to see what commercial products are available.


Back to...
Outage Menu
Animal Menu
Transmission