They are a slate gray on the top and white underneath. I thought of a titmouse, but these birds don't have the tuft on their heads. They are agressive, fighting off other birds and even sometimes their own species. Maybe all birds are this way, but these little gray ones seem more agressive than others at the feeders.
Figure 3.6 An independent BSS (IBSS) is the most basic type of 802.11 wireless LAN. Figure 3.7 An Extended Service Set (ESS) 802.11 wireless LAN consists of multiple cells interconnected by access points and a distribution system, such as ethernet.
(Redirected from Passenger Service System) A passenger service system (PSS) is a series of critical systems used by airlines. The PSS usually comprises an airline reservations system, an airline inventory system and a departure control system (DCS). Generally the PSS is made up of modules that are used to manage different parts of the airlineâs business.