In the days since GPS was invented, many of us have lost the skill of navigating by a good old compass and map. As a family ...

From what we can tell, the mobile versions of both Google Maps and Google Earth automatically correct for magnetic declination and always show True North, although we couldn’t find any ...

Reed warblers have a sense for magnetic declination Date: August 17, 2017 Source: Cell Press Summary: Researchers recently showed that migratory reed warblers depend on an internal geomagnetic map ...

If the birds were simply responding to the change in declination – like a magnetic compass would – they would have only shifted eight degrees.

Because magnetic north is wandering, it's important to have a modern map. Because even if the declination only changed by one degree, that can make an enormous difference over the course of a few ...

Declination is the difference between true north and where the compass points to. With the magnetic field of the Earth changing more than predicted, the values can be off requiring an out-of-cycle ...

Bird-brained? Not at all: Reed warblers reveal a magnetic map Mature reed warblers are able to detect the declination from magnetic north Date: August 17, 2017 Source: Bangor University Summary ...

Many migratory birds use Earth’s magnetic field as a compass, but some can also use information from that field to determine more or less where they are on a mental map. Eurasian reed warblers ...

In Maine, magnetic declination currently varies between 14-1/2 and 17 degrees west of true north, depending on your location. Spread your map out on a table and let’s do a quick exercise.

Magnetic declination – the difference between the direction to the magnetic north pole and the geographical north pole – provides the east-west axis.