I think the main factors limiting sage grouse are over grazing of sage flats, and fence lines in historic leks. Once cheatgrass takes over sage lands the quality of the land starts to plummet fast.
This is more than a bit out from under my umbrella of knowledge but, besides the habitat problems, I understand that they are very susceptible to the West Nile Virus.
Ya. There are a lot of obvious factors that are even proven factors by wildlife officials. I was just thinking that maybe a surrogator could be a way to think outside the box since over grazing and oil rigs are not going to stop. Too much money in those businesses to care about birds and habitat.
I think we have determined the surrogator is a glorified brooder and unlikely to acomplish anything beyond enrichment of the seller. Sage grouse have been raised in captivity, but it is extremely difficult. The requirements of our native grouse are very challenging, most will simply not tolerate development of any kind, roads, oil drilling, overgrazing, are all trouble. I recently read a heart breaking article about lesser prairie chickens which described as common for birds to be killed by flying into barbed wire fences or telephone/electric transmission lines. Studies on greater prairie chickens reveals unwillingness to nest within a quarter mile of a man made structure. The research on sage grouse is late to the party, but you can guess what will find, based on the research on the other native grouse, with the additional problem of specialized evolved diet. These birds do not adapt to change. They will simply vanish, and we will all be the poorer for it. This is purely a habitat problem in the purest example, releasing a few 5 week old birds, won't fix it. Setting aside vast areas of BLM, and national grasslands, off limits to overgrazing, and oil prospecting/drilling will. Anything less we and the birds lose.
I certainly wouldn't trade the sage grouse for all the non-native chuckars in the west. But I fear it's the way of the world, or should I say such as we have made the world. We change ecosystems for the worse with little thought and then decry the result, extinction of a species which evolved over a thousand years. I believe the Sage Hen to be a United States issue, I am not sure they exist anywhere else, possibly a few in Canada. Looks like we need to protect the sage, to save the sage grouse. Where I hunted for years, the sage was like a forest, with some as tall as trees, some ankle high, with many different subspecies, sage grouse used it all. Find a trickle of a stream or a few catch basins for water in an area and it was not uncommon to see 100's of sage grouse in a short walk. They hold for a pointing dog great, and are not crafty. I now feel like they are a trophy species, and a mature cock is certainly all that. I see that Wyoming is allowing the harvest of up to 75 eggs to try captive rearing, of course you have to have sage to feed them and apparently mealworms to keep them interested and picking at the sage. The article points out the difficulty in captive rearing.