What precautions are taken to avoid bird strikes? According to this Wikipedia page on bird strike,


  The International Civil Aviation Organization (ICAO) reported 65,139
  bird strikes for 2011-14, and the Federal Aviation Authority counted
  177,269 wildlife strike reports on civil aircraft between 1990 and
  2015, growing 38% in 7 years from 2009 to 2015. Birds accounted for
  97%.



What precautions are taken so that birds are not killed by aircraft?
Is the pilot held responsible or does the pilot pay some penalty in case innocent animals are killed?
Are there any planes which have been designed specifically focusing on bird safety (or have there been any efforts in designing planes focused on bird safety)?
Where can I get reports on the number of bird strikes per year on an international level?


Note: This question does not concern the damages the airline suffers from bird strikes.



Update In Addition To Other Answers

Why jet engines are NEVER protected in the front?!
Humans are more important than animals by "most" societal standards. Therefore, bird safety is secondary to human safety (pilots and passengers). However, there are certain areas (in US) that are designated as protected areas for certain types of birds, such as in California where I have seen protected areas for the California Condor which requires pilots to fly at a certain altitude above that area. On VFR Sectional Charts the special conservation areas are depicted as indicated here:

 

These conservation area restrictions are mostly to avoid disturbing the birds, but I assume it also reduces the risk of a bird strike by requiring the aircraft to fly higher over these areas.

One of the most important precautions is for pilots to remain vigilant and see and avoid, but that is not always possible when a flock of thousands of birds takes off near an airport when airplanes are landing and taking off.

Some airports use various methods (see links provided) to scare flocks of birds away such as using hawks, noise, and other methods.




I don't know of any aircraft that are designed for the safety of birds. I believe this is a very low priority in aircraft design.

Try checking the Audubon Society website, they have a lot of information on risk to birds and statistics on such risks.