Chickens are the most populous farmed animal in North America and account for the most deaths in slaughterhouses. Globally, over 68 billion chickens were killed for food

That same year, the top ten countries that killed the most chickens were:

China – 10.1 billion
United States – 9.2 billion
Brazil – 6.3 billion
Indonesia – 3 billion
Russia – 2.6 billion
India – 2.6 billion
Iran – 1.9 billion
Mexico – 1.8 billion
Myanmar – 1.3 billion
Thailand – 1.3 billion

(Source: https://thehumaneleague.org/ : Year : 2018)