crows, or magpies may be controlled without a federal or state depredation permit when found committing or about to commit depredations on ornamental or shade trees, agricultural crops, livestock, or wildlife, or when concentrated in numbers and in a manner that constitutes a health hazard or other nuisance.

Two together is a nuisance because they make to much noise so they are a noise nuisance.

I would like to see that in B&W from TPWLD or Legis??

You asked.

From
http://www.crowbusters.com/begart5.htm

"In addition, the taking of crows under the depredation order must comply with the conditions listed in Section 21.41(c). As an example, while decoys, calls, other devices to entice birds within gun range, and rifles may be allowed during a sport season, they are specifically prohibited under the depredation order by Section 21.41 (c). The U.S. Fish and Wildlife Service (USFWS) feels the basis for these restrictions is that it would be counterproductive to lure or entice crows into an area already experiencing depredation problems. Other requirements of that subsection, such as retrieval and disposition, must also be met. Certain severe depredation problems can allow exceptions through obtaining a permit by application. Be mindful that these restrictions apply when you are helping a landowner with his depredation problem. Since states can be more restrictive, please check with your state game enforcement officer first."

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That said, some of the depredation requirements in Federal regulation is not enforced by TPWD. Or the interpretation is not agreed on by the State. Same as the Federal regulation that posession limits on waterfowl include birds stored at your residence as part of your posession limit is also not enforced or agreed on by TPWD. If I remember, JJ does have TPWD permission for his guided Crow hunts. But if you write USFW with the questions. They will say you can't hunt crows with calls and decoys under depredation. Same if you write them with the question on posession limits of waterfowl. But I am not aware of either Federal determination having ever been enforced in Texas.