As you may be aware, in the last few years, some people are getting them confiscated (until their return flight) at the airport in Hurghada; it's not as bad as Cairo, but it still happens. When I had a migratory soaring bird contract about 4 years ago, all our team (c. 15 - 20) got through both airports fine, but since then I understand it's got pretty bad. There is some discussion of it on the FB Birding in Egypt group. Basically, it's a gamble and the odds aren't good. :-(