Chickens of Maui
1) The hens are home keeping their eggs warm. Do hens really do this, or is it something they do when they're in a cage and there's nowhere else to sit? Is it even necessary on Maui? From watching them around the hospital, it looks like each hen lays her eggs in like 12 different holes...
2) Somebody is catching the females and keeping them for egg laying purposes. Certainly a possibility, but there are so many free roaming chickens and I know so few people that keep them that I doubt there would be much effect.
3) Hens are being killed at a higher rate in traffic accidents. Every morning I have to slow down or stop to avoid chickens. Almost always, this is the result of a slow moving hen. Roosters will increase their speed or change direction when they see me coming, but hens nearly always continue on their original course. I do not think roosters are smarter than their female counterparts, I believe it is more likely that hens are just more stubborn.