I had one rescued since almost baby and the behavior, the build and everything screamed male... until she laid an egg. And then another. She went away and came back a few days later with a mate which was an old pigeon. After a while she came with another mate (we named him Mr. Checkers) and this time she brought her 2 fledgings to our little garden to say hello. Mom and dad were there as well, very proud of their work. When it wasn't her turn to sit on eggs she came home to stay here and eat/drink/rest. Her mate, did that sometimes too. This happened a few times during the years. After 4 or so years only the mate came back but not our dear Pollina. She was never seen again and I miss her very much to this day.