I think most topics have been covered while I was off hunting in Montana and Alberta but to summarize I?ll make a couple of comments about USFWS regulations from my experience. I wasn't a LE agent so I was not responsible for interpreting or enforcing the regulations, just setting the seasons. I am not a lawyer either so these are really just my opinions based on my understanding of the regulations.
There is a difference between field possession limit and overall possession limit. But if your home freezer is being searched you've got much bigger problems. The average hunter doesn't need to worry about an agent showing up at their house and asking to see what is in the freezer. If there are agents at the door they will have search warrants and and therefore a judge?s concurrence that there is probable cause of likely felony violations. This regulation goes back to the days of market hunting and looking for barrrels of dead ducks that will be sold.
There is a difference between the identification requirements domestically and traveling internationally. An attached wing is required internationally while an attached wing OR head is required domestically.
Gifting is also different. You can gift birds within the US but you are not allowed to import birds into the US gifted to you while hunting in a different country. Tod posted the required Federal requirements for tagging. So if you gift people migratory birds tag them. If you are concerned your home freezer might be searched, then gift and tag possession limits to your wive and kids and anyone else in the family. I wouldn't bother with tagging the sausage. Remember selling or bartering migratory birds and their parts are illegal so don't be seeing that sausage or jerky.
The possession regulations are not written for ease of reading unfortunately. Yes, in some cases, they are old and antiquated but LE refused to rewrite them during my tenure mainly because they viewed it as low priority.
With regards to federally protected migratory game birds, states can be more restrictive than Federal regulations but can not be more lenient or liberal. So if the state regulations require something greater than the Federal tagging or gifting even bag limit, you must abide by those state's regulations. Yes there are states that occasionally will have bag limits more restrictive than Federal bag limits.
Mark, you can only harvest one limit per day in all combined states. You could have up to your possession limit (3 daily bag limits) while in the field. So, for example, if you shot a limit in Wisconsin on Monday, then another limit in Iowa on Tuesday and then a limit in Minnesota on your way home on Wednesday, you have your Federal field possession limit. If Minnesota doesn't allow a possession limit of 3 times the daily bad limit then you are in violation of the state law but not Federal law. You can not harvest more than one bag limit per day. So if you were hunting the Mississippi River, you can't shoot limits in both states during the same day. The limit that would apply is the state where you are physically being checked and the license that authorizes your hunting there.
I'll stress again the IMPORTATION regulations are different from domestic regulations. You can not import processed migratory game bird meat. No sausage, jerky, gumbo or whatever even if all birds were lawfully taken by Canadian regulations.
Regarding probable cause, if a Federal agent sees you hunting (fact) and suspects that you may have violated a regulation or sees you leaving a hunting situation with evidence of hunting (another fact) and suspects you may have violated a regulation. Searches are based on probable cause and whether there is a reasonable expectation of privacy. Hunting outdoors does not meet the objectively reasonable expectation of privacy that would happen at your dwelling. Additionally, in buying a hunting license and duck stamp, you agree to show licenses and any harvested wildlife to agents when requested.
Here is the Federal law regarding search and seizure under the Migratory Bird Treaty Act.
706. Arrests; search warrants
Any employee of the Department of the Interior authorized by the Secretary of the Interior to enforce the provisions of this subchapter shall have power, without warrant, to arrest any person committing a violation of this subchapter in his presence or view and to take such person immediately for examination or trial before an officer or court of competent jurisdiction; shall have power to execute any warrant or other process issued by an officer or court of competent jurisdiction for the enforcement of the provisions of this subchapter; and shall have authority, with a search warrant, to search any place. The several judges of the courts established under the laws of the United States, and United States magistrate judges may, within their respective jurisdictions, upon proper oath or affirmation showing probable cause, issue warrants in all such cases. All birds, or parts, nests, or eggs thereof, captured, killed, taken, sold or offered for sale, bartered or offered for barter, purchased, shipped, transported, carried, imported, exported, or possessed contrary to the provisions of this subchapter or of any regulation prescribed thereunder shall, when found, be seized and, upon conviction of the offender or upon judgment of a court of the United States that the same were captured, killed, taken, sold or offered for sale, bartered or offered for barter, purchased, shipped, transported, carried, imported, exported, or possessed contrary to the provisions of this subchapter or of any regulation prescribed thereunder, shall be forfeited to the United States and disposed of by the Secretary of the Interior in such manner as he deems appropriate.
(July 3, 1918, ch. 128, ?5, 40 Stat. 756 ; 1939 Reorg. Plan No. II, ?4(f), eff. July 1, 1939, 4 F.R. 2731, 53 Stat. 1433; Pub. L. 90?578, title IV, ?402(b)(2), Oct. 17, 1968, 82 Stat. 1118 ; Pub. L. 95?616, ?3(h)(1), Nov. 8, 1978, 92 Stat. 3111 ; Pub. L. 101?650, title III, ?321, Dec. 1, 1990, 104 Stat. 5117 .)
Amendments
1978-Pub. L. 95?616 made provisions respecting seizures and judgment of court applicable to birds, or parts, nests, or eggs sold or offered for sale, bartered or offered for barter, purchased, imported and exported and substituted "any regulation prescribed thereunder" in two places for "any regulations made pursuant thereto" and "any regulation made pursuant thereto" and provision for disposition of the birds, etc., by Secretary of the Interior in such manner as he deems appropriate for prior provision for such disposition as directed by court having jurisdiction.