Feeding the hungry, water for thirsty and treating the sick are good deeds that given a feeling of satisfaction and joy. We all have seen flocks of pigeons and there are places where they are fed every no and then.
Early morning people before leaving for jobs they feed pigeons with grain and water. Feeding wild pigeons is becoming emerging hobby.
In USA it is the second biggest hobby of people after gardening. This act of kindness will be rewarded by God as already humans are responsible for killing billions of animals and deforestation.