Successful Harvest Reporting and Human Dimensions of Waterfowl Hunting Regulations: How to make things work Craig A. Miller Human Dimensions Research Program.

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Presentation transcript:

Successful Harvest Reporting and Human Dimensions of Waterfowl Hunting Regulations: How to make things work Craig A. Miller Human Dimensions Research Program Illinois Natural History Survey University of Illinois (USA)

US Fish and Wildlife Service Adaptive Harvest Management Framework Hunting season lengths and maximum harvest set each year by U.S. Fish and Wildlife Service (USFWS) – Allow for 30, 45, or 60-day seasons – Specific dates set by each state wildlife agency USFWS allows for up to 3 state zones and split seasons (in for 2 weeks, out for ~2 weeks, then in for remainder of maximum) OR 4 state zones

State of Illinois, USA

Rivers of Illinois

Illinois Waterfowl Zones

North American Flyways

Hunters and Flyways There is latitudinal as well longitudinal relationship Seasons – hunter preferences for mid-season to coincide with peak migration, avoid freeze dates Methods – e.g., Spinning-wing Decoys Some hunters also blame duck numbers on harvest in other states in the flyway

Waterfowl Research Illinois Natural History Survey Illinois Natural History Survey founded in 1858 Began modern era of waterfowl research with Frank Bellrose in 1940s present conduct weekly inventory flights to count waterfowl (01 September – 30 January) Conducted early studies on lead shot ingestion in waterfowl Bellrose Waterfowl Research Center Annual waterfowl harvest surveys began in 1980

Illinois Natural History Survey Waterfowl Harvest Surveys Annual mail survey of 5,000 waterfowl hunters randomly selected from 50,000 – 60,000 waterfowl hunters in the state of Illinois Before season begins sampled hunters mailed harvest cards to record individual harvest of mallard, wood duck, canvasback, and other duck species, plus Canada goose and other geese Hunters also asked to record number of days and counties hunted Following season hunters mailed 8-page survey questionnaire aimed at harvest, regulations, and other policy issues

Pre-season Goose Harvest Card Date of Hunt Zone Hunted County Hunted Sept. Canada Geese Canada Geese Snow/ Blue/ Ross’ Geese White- fronted (Speckle -belly) Geese Geese downed not retrieved # of Shots Taken

Annual Waterfowl Harvest and Hunter Surveys Illinois Waterfowl Hunter Survey (annual harvest survey) Illinois Snow Goose Hunter Survey (Chen caerulescens) - annual survey of special light goose spring season Pre- and Post-Duck Season Hunter Survey

Illinois Waterfowl Harvest 50,740 hunters 1,155,346 days afield 580,557 total birds harvested 29% hunted ducks only 10% hunted geese only 61% hunted both Total 90% hunted ducks, 71% hunted geese

Duck Harvest 43,444 hunters 630,223 day afield 244,988 mallards (Anas platyrhynchos) 47,623 wood ducks (Aix sponsa) 185,776 other ducks 478,387 total ducks 4,133 American coots (Fulica americana)

Goose Harvest 34,034 hunters 386,356 days afield 72,682 Canada geese (Branta canadensis) 19,597 other geese 92,280 total geese

Science of Harvest Surveys Harvest surveys involve psychological considerations Hunters subject to certain bias in reporting harvests Recall bias Digit Preference Cultural factors Nonresponse bias

Recall Bias Difficulty recalling events accurately over time Telescoping – recall earlier events as though closer in time Using memorable event as typical of others Difficulty separating events into discrete segments

Digit Preference Preference given to reporting harvest or days afield in digits ending in 0 or 1 Season harvest may be reported as multiples of individual days

Illinois Duck Harvest

Illinois Duck Hunter Days

Cultural Factors Over-estimate harvest to “assist” agency Under report harvest to mislead agency Not respond due to attitudes toward “government”

Nonresponse Bias Bias in key factors contributing to nonresponse to survey Question sometimes arises: “Do hunters respond to surveys because they harvest more/less than ‘average’?” Answer: No

Current Research Checking hunter daily bags at state hunting areas and after season survey to note recall accuracy. Send pre-season harvest card to 5,000 hunters and not to 2,000 – and both get post-season survey

Waterfowl Hunting Traditions Past and Present

New Hunting “Forces” and Harvest Hunting videos – depict harvest and success to a greater degree than reality In U.S.A., viewed by a majority of younger hunters May be providing a skewed perspective on hunting success and harvest New and increasingly technical equipment to maximize harvest

Spinning-Wing Decoys

Full-body Decoys

Calls

Blinds

Waterfowl Bands

Human Dimensions Challenges are to understand trends in hunter behaviors that may influence harvest Understanding motivations and preferences of hunters will help predict impacts on harvest and populations Research will allow to be proactive in anticipating new approaches, rather than be reacting to them

Thank you