Gone pigeon

Hi friends, I used to feed a pigeon on my window since he was born for 1 1/2 years, he came everyday two or three times and usually was around watching the window and taking care that other birds did not perch on the window. Seven months ago he brought a girlfriend and they used to eat togheter. But it's been 11 days he hasn't come back and I'm wondering if something happened to him or if he just left or took like a trip..I'm also worried if I put him too much food..I put rice,sometimes lentils, peas, bread, and little pieces of pasta. Last days it was only rice and don't know if he just got tired.. I find it very weird he left companion and she returns everyday alone. So my question is if a pigeon who has food and a partner can just get tired and go to travel? I miss this pigeon so bad!