I certainly don’t know the answer but the population numbers seem to suggest that sheep numbers are down regardless of the management strategy. Historically this has also been the situation.
https://www.cbc.ca/news/canada/north/dall-sheep-survey-kluane-region-decline-concerning-1.7024101
This article helps bring the scope of the population situation into perspective.
There is excellent
Though some of these data-sets certainly present some challenges, for the most part they provide good insight to the general chacteristics of the sheep harvest.
There are several data-sets from the early 50’s and late 60’s, collected by agency personnel, that in general...
This is the earliest survey I am aware of for the HulaHula. However, there is information that provides an indication of sheep population levels available for local use from early in the last century.
Certainly the populations are low - but we have seen some very dramatic swings in the past - such as McKinley Park in the forties and the HulaHula. In the early 50s on the HulaHulla survey they observed 75 sheep and estimated 150 - in the 70s or early 80s the survey counted over 3000.
Thanks for posting. I would just say from my experience a lot of people and managing agencies do CARE- however, to say the options are severely limited is a gross understatement.
Thought we know there is history of sheep populations experiencing serveral extreme lows in the past, we don’t have age data from the harvest for those periods.
The groove formed at 18 months tends to be oval shaped on the butting surface; shallow and smooth while the 30 months groove usually forms a notch on the upper part of the outer surface and pronounced bump on the inner surface of butting edge and the butting surface is usually flat.
Counting the ring formed 18 months as “2” assumes the animal dies after June of the following year. If the animal dies in say April the age would be “1” though in its second year of life. An animal with eight annuli is seven until the next May or June. Since most animals harvested in the fall...
The first ring shows all the characteristics of the ring formed at 18 months. The next ring is consistant with the ring formed at 30 months.
Hope this helps
The first thing that stands out is how much weaker the groove is compared to those on either side. The groove in question appears to be part of a pattern that is repeated in several previous growth segments.
I can annotate an image if it would help.
Though a groove completely circling the horn is a characteristic of a true growth ring, it is not unique to true growth grooves. Some false growth grooves also show a strong groove encircling the horn.