And the crows ate them all

Today morning when I opened the balcony and peeped into the dove nest, I noticed only one nestling.  I wondered what had happened to the other one.  The answer came when I was watering my garden.  A crow swooped down, grabbed the chick by the neck, and flew away.  All I could see was the tiny brown thing hanging helplessly from the crow's beak.  I guess that is life.
The nest is empty.  The parent had fed the chick in the morning and gone away possibly to get more food. I wonder whether they will return.