We are fortunate enough to live in a section of Arizona that holds all three species of quail, and they all frequent our backyard. Over the past 27 years here is what I have observed regarding all three species: The Mearns population has stayed the same, I see no more nor any less than I did when we moved in 27 years ago. The Scalie population is getting smaller with each passing year. The Gambels population is increasing. When we first moved in we had none, just Scalies and Mearns. About 6 years ago we had our first pair of Gambles in the yard. Now the Gambles are overtaking the Scalies at an alarming rate. We are seeing larger hatches of Gambels, 6 to 8 chicks per hatch as compared to the Scalies with 4 to 6 chicks per hatch. Just today we saw a cock Gambles with a Scalie hen and 7 chicks in tow. Appears that the Gambles are now breeding with the Scalies. Any thoughts from you quail hunting experts?