With　the　advancement　of　technology,　intelligent　unmanned　aerial　vehicle　swarms　(UAV-S)　are　playing　an　increasingly　significant　role　across　various　industries,　and　sensing　is　one　of　their　key　capabilities　that　enable　UAV-S　to　operate　more　effectively　in　complex　and　dynamic　surroundings.　However,　due　to　payload　constraints,　UAVs　often　face　limitations　in　the　number　and　weight　of　sensors　they　can　carry.　Integrated　sensing　and　communications　(ISAC)　aims　to　achieve　hardware　and　spectrum　sharing　between　radar　sensing　and　wireless　communication.　This　integration　augments　not　merely　the　network　functions,　but　also　enhances　resource　efficiency,　thereby　unlocking　novel　capabilities　for　UAV-S.　The　information　gathered　by　ISAC　related　to　the　targets　and　surroundings　can　be　utilized　for　adaptive　deployment,　resource　management,　and　more,　thereby　enhancing　the　intelligence　of　UAV-S.　In　this　article,　we　focus　on　exploring　the　feasibility　of　utilizing　ISAC　in　UAV-S.　Firstly,　we　highlight　the　potential　of　ISAC　in　UAV-S　and　present　several　application　instances.　Secondly,　we　explore　how　ISAC　enhances　UAV-S　capabilities,　covering　aspects　like　networked　perception,　sensing-assisted　communication,　and　adaptive　deployment.　Additionally,　we　outline　potential　challenges　and　opportunities　that　ISAC　may　face　during　its　deployment　in　UAV-S.　Finally,　we　use　adaptive　deployment　as　a　case　study　to　illustrate　the　performance　enhancements　brought　by　ISAC　to　UAV-S.