Sure enough, when I arrived at the Upper Pond a few minutes later, at least one of the adults was still in a highly agitated state, slapping and swimming back and forth very energetically. I had things to do before dark so I moved on but just in case the dispersing youngster was considering staying, I avoided Preston Pond when returning. Over the next few days, I documented his work (I say "his" since according to Cree and Innu I've talked to up north, typically, it is the young males who establish a residence and the females look for a male with a good set up) on the dam and noted that he had made castor mounds at points around the pond and there were numerous feeding sites along the west shore where the forage was dense. His dam building skills were pathetic but improved quite quickly. The lake level rose to the point that the old submerged dam was again mostly submerged and Bonnie and I could access the main lake with our canoes, but we avoided the pond a bit not wanting to spook him off. We saw him from time to time though and he was probably used to people from growing up on the Upper Pond which is immediately next to a hiking and VAST trail, so after a couple of weeks, we guardedly celebrated having a beaver back in the lake.
This blog is for Bolton residents and Town Forest users to share their images, thoughts, and stories of Preston Pond and the Bolton Town Forest. My wife Bonnie and I live near the SW shore and are out nearly every day. We will be contributing from our daily walks and wanderings. We will also be posting thoughts on issues within the forest and welcome other Bolton residents and Town Forest users to join in those discussions.
Peak Foliage
Brief History of Preston Pond
Born from glaciers about 13,500 years ago, the original pond was only what is now the wider north end. Probably about 10,000 years ago, as the modern forest started to take root, beavers colonized the pond and expanded it (old dams are under the water surface).
With the arrival of Europeans in New York and coastal New England, a vigorous fur trade grew in the 17th Century. Beavers are particularly vulnerable to trapping since they are easy to find and they were wiped out by the 18th Century. With no beavers to maintain the dams, Preston Pond drained and appears on 18th and 19th Century maps as only the smaller original glacial north end.
Reintroduction in the 1920's and 1930's led to beavers recolonizing Preston Pond. By chance, they arrived the same year my grandfather bought the property in 1946. Ever since then, beavers have lived unmolested (by humans) on Preston Pond - until February 2016. They have never caused flooding problems or over-eaten the surrounding forest stand to the point that they abandoned the pond. Their population has doubtlessly had its ups and downs, but they have managed their affairs here for the last 70 years as beavers did for millions of years: on their own, despite some of their top predators having been exterminated by humans.
[In talking to members of our family, there have been two brief intervals in the past when the beavers were absent: First, in '71/'72 (I was preoccupied with high school, track and cross-country so didn't notice or recall and the reason is unknown) and second in '83/'84 after a major dam break. At least one adult was killed in the outwash. I was living in NYC at the time and a new father and again, had forgotten that as well].
With the arrival of Europeans in New York and coastal New England, a vigorous fur trade grew in the 17th Century. Beavers are particularly vulnerable to trapping since they are easy to find and they were wiped out by the 18th Century. With no beavers to maintain the dams, Preston Pond drained and appears on 18th and 19th Century maps as only the smaller original glacial north end.
Reintroduction in the 1920's and 1930's led to beavers recolonizing Preston Pond. By chance, they arrived the same year my grandfather bought the property in 1946. Ever since then, beavers have lived unmolested (by humans) on Preston Pond - until February 2016. They have never caused flooding problems or over-eaten the surrounding forest stand to the point that they abandoned the pond. Their population has doubtlessly had its ups and downs, but they have managed their affairs here for the last 70 years as beavers did for millions of years: on their own, despite some of their top predators having been exterminated by humans.
[In talking to members of our family, there have been two brief intervals in the past when the beavers were absent: First, in '71/'72 (I was preoccupied with high school, track and cross-country so didn't notice or recall and the reason is unknown) and second in '83/'84 after a major dam break. At least one adult was killed in the outwash. I was living in NYC at the time and a new father and again, had forgotten that as well].
Saturday, July 27, 2019
Leave It To Beaver(s)!
It took three years, one month, two weeks, and five days, but they're back! Dispersing young from the Upper Pond had disappointed us over the last three years by just moving on, but May 15, 2019 was to be different. I was on my way to tend to a trail issue that evening and walking above Preston Pond on the western ridge. The leaves weren't out yet so I had a clear view of the entire lake when motion in the marsh at the north end caught my eye. The binocs revealed a beaver moving down the feeder stream from the Upper Pond in what seemed a near panic. It entered Preston Pond and swam straight and fast as though its life were at stake. Finally, across from the ledges on the east shore, it slowed and submerged. It was odd behavior for a beaver. I guessed I had chanced upon the moment a second-year had been chased from its natal pond - in this case, the Upper Pond, whose colony, unlike Preston Pond's, survived the trapping in 2016.
Sure enough, when I arrived at the Upper Pond a few minutes later, at least one of the adults was still in a highly agitated state, slapping and swimming back and forth very energetically. I had things to do before dark so I moved on but just in case the dispersing youngster was considering staying, I avoided Preston Pond when returning. Over the next few days, I documented his work (I say "his" since according to Cree and Innu I've talked to up north, typically, it is the young males who establish a residence and the females look for a male with a good set up) on the dam and noted that he had made castor mounds at points around the pond and there were numerous feeding sites along the west shore where the forage was dense. His dam building skills were pathetic but improved quite quickly. The lake level rose to the point that the old submerged dam was again mostly submerged and Bonnie and I could access the main lake with our canoes, but we avoided the pond a bit not wanting to spook him off. We saw him from time to time though and he was probably used to people from growing up on the Upper Pond which is immediately next to a hiking and VAST trail, so after a couple of weeks, we guardedly celebrated having a beaver back in the lake.
Then, on or about June 6, his castor mounds worked. A neighbor informed us that he and his wife had seen two beavers on the pond. We took the canoe out that evening. There were no dispersing young adults upstream of Preston Pond other than his sibling so possibly a dispersing female from the pond across the Stage Rd from us caught the scent. We spotted them almost immediately and watched the pair of them canoodling together up at the northern end near the collapsed west shore lodge. We now can again enjoy an evening paddle around the pond. We always see them and while they still give us a slap or two, they seem to becoming used to us. They aren't to the point that the former beavers were (swimming along with the canoe and playing with one of our dogs; those photos and videos are farther back in this blog), but these two have decided, as untold numbers of beavers have in the thousands of years before them, that Preston Pond is the place to live.
Sure enough, when I arrived at the Upper Pond a few minutes later, at least one of the adults was still in a highly agitated state, slapping and swimming back and forth very energetically. I had things to do before dark so I moved on but just in case the dispersing youngster was considering staying, I avoided Preston Pond when returning. Over the next few days, I documented his work (I say "his" since according to Cree and Innu I've talked to up north, typically, it is the young males who establish a residence and the females look for a male with a good set up) on the dam and noted that he had made castor mounds at points around the pond and there were numerous feeding sites along the west shore where the forage was dense. His dam building skills were pathetic but improved quite quickly. The lake level rose to the point that the old submerged dam was again mostly submerged and Bonnie and I could access the main lake with our canoes, but we avoided the pond a bit not wanting to spook him off. We saw him from time to time though and he was probably used to people from growing up on the Upper Pond which is immediately next to a hiking and VAST trail, so after a couple of weeks, we guardedly celebrated having a beaver back in the lake.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment