Duck Harvests Coming Later

Duck Harvests Coming Later
Duck Harvests Coming Later

Delta Waterfowl study shows mallards among species arriving later in season

A Delta Waterfowl study has confirmed what veteran duck hunters have long suspected: harvests of many waterfowl are taking place significantly later in the year than in previous decades.

The Delta Duck Migration Study, commissioned by the Bipartisan Policy Center, was written by science director Dr. Frank Rohwer, Louisiana State University graduate student Bruce Davis and senior director of U.S. policy John Devney.

The study examined data from the annual Parts Collection Survey. The U.S. Fish and Wildlife Service has collected comprehensive harvest data from hunters since 1961.

"With few exceptions, harvest dates for mallards throughout the mid-latitude and southern states have become consistently later," Dr. Rohwer said. "Mallard harvest is on average 10 days later in Arkansas, 15 days later in California, 16 days later in Illinois, and 12 days later in Virginia."

The study found that most migrant duck species, including gadwall, ring-necked, pintails and green-winged teal, have significantly later harvest dates. Blue-winged/cinnamon teal and mottled ducks were the only species to run against the trend.

"Hunters have suspected this was happening, and for the first time, we've seen the data that confirms this on a big scale," Rohwer said. "As usual, hunters seem to know more than we give them credit for."

The report examined whether later hunting seasons were a simple explanation for later harvests. While it's true that most states have extended their seasons from the 60's, the report found this was not the 'sole driver' for shifts in harvest dates. For example, non-migrating mottled ducks in Texas and Louisiana are being harvested at about the same time as 50 years ago. But hunters in those states are harvesting mallards much later in the year, suggesting that Mallards -- which are strictly migrants from the north -- are arriving later.

So does a later harvest mean ducks are actually migrating later?

Dr. Rohwer said the best way to evaluate shifts in migrations would be a history of waterfowl counts throughout the flyways. Unfortunately, comprehensive fall migration surveys do not exist.

"The beauty of the Parts Collection Survey is that it has been conducted in the same manner since 1961 and records the date, location and species of duck killed. It provides a good general sense of when duck harvest is taking place, which we suspect is a reasonable surrogate for timing of migration."

A hot topic in southern duck blinds is whether changes in northern agriculture that provide additional food may be holding ducks longer in northern states. The theory goes that field-feeding ducks like mallards and pintails will stay longer; fatting up on left over corn and soy beans in higher latitudes.

If food was the driver of migration and harvest dates, Dr. Rohwer said, then gadwall and ring-necked ducks that never feed in fields should migrate and be harvested at the same time as in prior decades. The harvest data, however, shows that all four species show similar shifts in delayed harvest. The idea that northern agriculture is holding ducks back is 'unlikely,' the report concluded.

The report also had a preliminary look at whether or not migration may be delayed because of the potential effects of climate change. While the report concluded it's 'plausible', the harvest data can neither prove nor disprove any connection between migration and climate change.

Waterfowl hunters are obviously interested in the timing of migrations, Dr. Rohwer said. The importance for the outdoor industry, tourism and waterfowl management make a compelling argument for more research into migration.

"Hunters, the outdoor industry and resource managers are not passive observers," Dr. Rohwer said. "They are expecting an answer to the deceptively simple question: Are ducks migrating later? They are holding policymakers and the scientific community accountable for an answer, as they surely should."

The Delta Migration Study is available in its entirety at on Delta Waterfowl's web site, DeltaWaterfowl.org or SeasonsEnd.org

Delta Waterfowl Foundation is a leading North American conservation organization, tracing its origins to the birth of the wildlife conservation movement in 1911. The Foundation supports research, provides leadership and offers science-based solutions to efficiently conserve waterfowl and secure the future of waterfowl hunting. Delta Waterfowl is based in Winnipeg, Manitoba, and Bismarck, N.D.

Recommended for You

Shooters across the U.S. are using this competition shooting mat. Guns

MidwayUSA Pro Series Shooting Mat

G&F Staff

Shooters across the U.S. are using this competition shooting mat.

 Several factors need to be evaluated before reaching a conclusion about what fly, lure or bait Trout & Salmon

How to Catch the Biggest Trout in the Stream

David Paul Williams

Several factors need to be evaluated before reaching a conclusion about what fly, lure or...

Experts agree record channel cat caught in 1949 was actually a blue catfish. Records

Upon Further Review: 70-Year-Old Catfish Record Voided

G&F Online Staff - May 22, 2019

Experts agree record channel cat caught in 1949 was actually a blue catfish.

See More Recommendations

Popular Videos

New Spinning Reel for Finesse Fishermen

New Spinning Reel for Finesse Fishermen

As Pure Fishing's Andrew Upshaw explains, reel making giant Abu Garcia has done it again at ICAST 2019 with a new spinning reel geared towards finesse fishermen.

Costa

Costa's Award Winning Waterwoman Sunglasses

Costa's Amanda Sabin tells OSG's Lynn Burkhead about all of the great features that made the new Waterwoman frame a big winner at the 2019 ICAST show as well as out on the water.

Simms

Simms' Solarflex Ultra Cool Armor Hoody

John Frazier of Simms Fishing Products helps OSG's Lynn Burkhead understand the new features of the new Simms' Solarflex Ultra Cool Armor sun protection hoody.

See more Popular Videos

Trending Stories

Dozens of different bait types are commonly used for catfish, including these great options. Catfish

12 Great Catfish Baits

Jeff Samsel

Dozens of different bait types are commonly used for catfish, including these great options.

When it comes to fishing baits, you won't find a more unusual variety than the strange brews of smelly ingredients often used to catch catfish. Catfish

How To Make Your Own Catfish Dough Bait

Keith Sutton - August 04, 2015

When it comes to fishing baits, you won't find a more unusual variety than the strange brews...

 A 7 pound giant taken on a jig during the pre-spawn transistion in the Midwest.

Although the art Bass

4 Tips When Jig Fishing For Bass

Chris Schneider - August 25, 2015

A 7 pound giant taken on a jig during the pre-spawn transistion in the Midwest. Although...

See More Stories

More Stories

Once considered a denizen of the Western wilds, the coyote has learned to adapt to human Stories

Coyotes In Suburbia

Stephen D. Carpenteri - November 30, 2016

Once considered a denizen of the Western wilds, the coyote has learned to adapt to human

A father and daughter with their dogs on a dry ground mountain lion hunt get more than they bargain Stories

Arizona Mountain Lion Hunt Turns Into Dangerous Jaguar Encounter

Aaron Decker - November 30, 2011

A father and daughter with their dogs on a dry ground mountain lion hunt get more than they...

Predator hunters living in more open areas are in a unique position to enjoy coyote hunting at its Stories

Guns & Loads for Long-Range Coyote Hunting

Stephen D. Carpenteri - December 13, 2015

Predator hunters living in more open areas are in a unique position to enjoy coyote hunting at...

See More Stories

GET THE MAGAZINE Subscribe & Save

Temporary Price Reduction

SUBSCRIBE NOW

Give a Gift   |   Subscriber Services

PREVIEW THIS MONTH'S ISSUE

GET THE NEWSLETTER Join the List and Never Miss a Thing.