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VenomLand :: VenomLand Forum :: Fieldworks / Herptrips
 

 Timber Rattlesnake den survey Minnesota USA May 2011

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Eli Carleton
Scotty Allen
6 posters
AuthorMessage
Scotty Allen
Snakecharmer
Snakecharmer
Scotty Allen


Male
Number of posts : 103
Age : 70
Location : southern Ontario, CANADA
Points : 5977
Registration date : 2008-11-19

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeWed 25 May - 9:54
Thought some of the readers might like to see some field photos of C. horridus

Timber Rattlesnake den survey Minnesota USA May 2011 Timber20

Timber Rattlesnake den survey Minnesota USA May 2011 Timber10

Timber Rattlesnake den survey Minnesota USA May 2011 Timber3

I spent a week and a half with friends in Minnesota observing various den sites. Snakes were just beginning to emerge on sunny days. None were collected or disturbed, photographed as found. This trip was part of a long term study on these den sites, all of which are on private land or protected sites. The species is protected in Minnesota, populations appear to be strong. A number of gravid females were observed.
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Eli Carleton
Snakekeeper
Snakekeeper



Male
Number of posts : 45
Age : 44
Location : USA
Points : 5271
Registration date : 2010-08-23

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeWed 25 May - 21:53
Thank you for sharing!

Do you observe the "gravid" females going back to the same basking locations every year?

Seems a little early to know they are gravid in such a northern population. Unless, as you stated, this is a long term study and you know when and where the females go:)

Eli
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Scotty Allen
Snakecharmer
Snakecharmer
Scotty Allen


Male
Number of posts : 103
Age : 70
Location : southern Ontario, CANADA
Points : 5977
Registration date : 2008-11-19

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeWed 25 May - 22:42
Thank you for the comments Eli.

Yes, gravid females have been observed using the same "rookeries" year after year although they only reproduce every two or three years.

Neonates have been seen as early as mid July and as late as end of September. Some early season gravid females are easily spotted without disturbing them on egress from the dens.
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Rainer Fesser
Systematicus
Systematicus



Male
Number of posts : 565
Age : 74
Location : Austria
Points : 6696
Registration date : 2008-03-13

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeThu 26 May - 2:35
Hello Scotty,

thank you for posting this. I enjoyed the photos and your words very much. I realize in your post the same attitude towards these animals that I have.

Best regards,

Rainer
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Kelly Chabak
Snakemaster
Snakemaster
Kelly Chabak


Female
Number of posts : 348
Age : 56
Location : Phoenix, Az
Points : 5553
Registration date : 2010-09-29

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeThu 26 May - 2:40
Thanks Scotty, nice photos:)
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Eli Carleton
Snakekeeper
Snakekeeper



Male
Number of posts : 45
Age : 44
Location : USA
Points : 5271
Registration date : 2010-08-23

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeThu 26 May - 4:52
Thank you for the additional information!

Crotalus horridus populations seem to be harder and harder to find.

Do the animals you encounter other than the gravid females appear to be healthy?

Eli
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Scotty Allen
Snakecharmer
Snakecharmer
Scotty Allen


Male
Number of posts : 103
Age : 70
Location : southern Ontario, CANADA
Points : 5977
Registration date : 2008-11-19

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeThu 26 May - 4:58
I've never seen one that appeared sickly in any way. This is probably a biased statement as I only get to the sites in the Spring. I doubt that unhealthy animals would survive hibernation. Even on egress, any that I have seen appear to be "fat n' sassy" so to speak. Smile
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Marthinus C. Harmse
Snakemaster
Snakemaster
Marthinus C. Harmse


Male
Number of posts : 254
Age : 43
Location : South-Africa
Points : 6044
Registration date : 2009-04-18

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeFri 27 May - 3:19
By far one of my favourite Crotalus species.
Their soft toffy colour sure is rad.
Great post. Thanks Scotty.
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Jon Davidson
Serpent Chief
Serpent Chief
Jon Davidson


Male
Number of posts : 512
Age : 69
Location : Toronto area, Canada
Points : 6319
Registration date : 2009-02-28

Timber Rattlesnake den survey Minnesota USA May 2011 Empty
PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitimeFri 27 May - 4:10
Great photographs, Scotty. Always good to hear that wild snakes can be observed in their natural habitat without being disturbed unnecessarily. Thanks for posting this. Sincerely, Jon Davidson .
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PostSubject: Re: Timber Rattlesnake den survey Minnesota USA May 2011   Timber Rattlesnake den survey Minnesota USA May 2011 Icon_minitime
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