Resources related to Bag Limits

To fly or not to fly: high flight costs in a large sea duck do not imply an expensive lifestyle

A perennial question in ornithology is whether flight has evolved mostly to facilitate access to food or as an anti-predator strategy. However, flight is an expensive mode of locomotion and species using flight regularly are associated with an expensive lifestyle. Using heart rate (HR) data loggers implanted in 13 female common eiders (Somateria mollissima), our objective was to test the hypothesis that a high level of flight activity increases their energy budget.

To fly or not to fly: high flight costs in a large sea duck do not imply an expensive lifestyle
To Fly or not to Fly

Recommendations for Establishing Population Objectives for Sea Ducks

No population objectives are listed for any sea duck population in the most recent (2004) update
or earlier versions of the Plan. The primary reason for lack of sea duck objectives is a lack of
reliable abundance estimates, confounded by inadequate knowledge of sea duck distribution for
some species.
Following a 2008 SDJV progress report to the NAWMP Plan Committee, the PC acknowledged
the need to establish population objectives for sea ducks and stated that this need should be

Recommendations for Establishing Population Objectives for Sea Ducks

Migratory Bird Hunting Activity and harvest 2003-2004

This report presents hunter activity and harvest estimates from the HIP surveys for the 2004-05
and 2005-06 hunting seasons. These estimates are preliminary, pending (1) final counts of the
number of HIP registrants in each state each season, and (2) complete audits of all survey
response data.
Since the 1952-53 hunting season, the U.S. Fish and Wildlife Service (FWS) has conducted a
survey of Federal Duck Stamp purchasers to estimate waterfowl hunter activity and harvest in

Migratory Bird Hunting Activity and harvest 2003-2004

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