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MIAMI (CBSMiaim/AP) — A dip in temperature may be giving hunters an early edge in a state-sanctioned hunt for elusive Burmese pythons in Florida’s Everglades.

Since the second Python Challenge began a week ago, snake hunters have turned in 39 of the invasive species, according to the Florida Fish and Wildlife Conservation Commission.

The first month-long python hunt on state lands in 2013 netted 68 of the snakes, with the longest measuring over 14 feet long.

The beginning of this year’s hunt coincided with a cold snap. Chilly weather can drive the tan, splotchy snakes from the wetlands, where they’re extremely hard to spot, into the open as they seek warmth.

“Cooler temperatures on sunny days is kind of a good situation for finding pythons because they’re more likely to be on levies and roads sunning themselves,” commission spokeswoman Carli Segelson said Friday.

A cold front over the last week pushed temperatures across South Florida into the lower 50’s at night, which is below normal, said Chuck Caracozza, a meteorologist with the National Weather Service in Miami.

Another cold front that is driving a blizzard toward much of the East Coast will cause temperatures here to plunge into the 40’s, with a wind chill in some inland areas in the upper 30’s, he said.

Over 800 people have registered for this year’s python hunt, which ends Feb. 14.

No additional information about the pythons caught so far was immediately available, Segelson said.

During the hunt’s opening weekend, a wildlife commission officer caught a 16-foot-10-inch python in a narrow stretch of state land just west of Homestead, in the Miami suburbs, that is open for the competition.

“I’m sure some of the people registered for the Python Challenge were disappointed that one of our officers took such a big one, but obviously he had to take advantage of the situation and remove an invasive snake,” Segelson said.

Individuals and teams registered for the hunt are competing for cash prizes, while they snakes they catch are turned over to researchers.

In an average year, only about 200 pythons are caught in Florida, even though tens of thousands may be slithering through the wetlands. The pythons’ natural camouflage makes them difficult to find, even for researchers who blame them for enormous losses in native mammal populations.

The population of Burmese pythons likely developed from pets released into the wild, either intentionally or in the aftermath of Hurricane Andrew in 1992. They can grow to be more than 20 feet long and have no natural enemies in Florida other than very large alligators, humans or cold weather.

Record cold temperatures killed hundreds of pythons in the Everglades in January 2010 but, to researchers’ dismay, large numbers of the snakes still thrived.

(TM and © Copyright 2016 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2016 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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