An opportunistic cross layer design for efficient service dissemination over flying ad hoc networks (FANETs) Collaborative networking involves multinetworks to unite together to form a network that can provide reliable connectivity amongst the ad hoc nodes. Flying ad hoc networks involves the aerial nodes that are capable to form the aerial ad hoc that can identify the ground nodes for potential data transmission between them. This allows formation of guidance map that can aloof any chances of network failures. Opportunistic network formation provides continuous connectivity between the aerial and the ground nodes. This can be realized using cross layer formation that operates over the parameters from multiple layers, and then finally a neural schema helps in attaining stabilization over the hybrid network. Cross layer design allows efficient service dissemination over the flying networks. In this paper, a cross layer based opportunistic network formation for flying network is presented that can provide continuous data sharing with efficient utilization of network resources between the aerial and the ground network. The Effectiveness of the proposed opportunistic network formation is presented using simulations.