Three main interpretations have arisen regarding the recent mass wildlife deaths throughout the world. The first set of reasons given as to why these mass animal and fish deaths are occurring is unique to each event: cows and birds were poisoned, fireworks provoked flight of birds causing them to crash into walls and die, and so on. There is a unique reason forwarded for each singular event. 
The second set of reasons are more conspiratorial and cite such possibilities as the massive wildlife deaths resulting from the unnerving chemtrails that have been widely reported throughout certain parts of the world. 

A more reasoned idea concerns the possibility that the massive deaths of animals and different types of fishes are due to the Earth's electromagnetic field that affects the membranes of the molecular cells of these different kinds of wildlife. 

When the different events of mass wildlife deaths are charted on a world map, with the Pacific view, a pattern does seem to be appearing. When I first started charting the different events, since the end of December, 2010, my first impression was to consider the possibility that a pattern may arise in relation to the Earth|Sun relationship, i.e., the Earth's ecliptic plane. Visit www.earthmatrix-muniments.com for a timeline in the charting of the world map. Here is an example of one of the more recent maps, which is obviously not to scale but merely a proposal for researching the possible pattern that is beginning to emerge from the occurrence of the different events.

 An Emerging Pattern


 
Other views are equally relevant when considered from the Atlantic Ocean perspective:

Mass Wildlife Deaths Atlantic View