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Here is a typical Turkey Vulture seen at the Portland Transfer Station. It has a more brownish appearance than the Black Vulture and also has reddish skin about the face. If you happen to be driving through Portland on route 66 during the summer, you may want to make a quick stop at the transfer station to check out the vultures. The time to go would be when the dump is closed-before 7am after 4pm, or on a Sunday.
If you were traveling on Main Street Portland, you'd never know that you were so close to the Brownstone Quarries. I took these photos from Silver Street, a short road that connects Main Street to Brownstone Avenue. You can get a nice view of the quarry from Silver Street. You need to be careful though since there is no protective barrier and it is about an 80 foot drop before you reach the water. There have been some unfortunate accidents here over the years. If you look off in the distance you can see some of the oil tanks which line a portion of the Connecticut River. There is actually a second quarry that can be seen from the other side of Silver Street but it can probably be better viewed from Brownstone Avenue.
From this angle you can see a portion of the newly developed Brownstone Exploration And Discovery Park. From what I understand, the quarries have a maximum water depth of about 90 feet. It has a fascinating history which you can read about in a short article here. I found another in-depth article about the quarries written by Alison Guinness that you can find here. If you ever happen to be passing through Portland be sure check out the quarries which are now listed as a National Historic Landmark. After I took in the view of the quarries from Silver Street, I took a right onto Brownstone Avenue and followed it to the end. There is a trail that you can take from there that follows a portion of the Connecticut River. This is where they used to dump all the unwanted pieces of brownstone. This is actually a decent area to go birding. There are some trails that wind through the woods and a privately owned horse pasture at the end. There were several Carolina Wrens in the area along with a Hairy Woodpecker and a Belted Kingfisher. I spotted several Monarch Butterflies and the field was loaded with grasshoppers. It was difficult to avoid stepping on them.