After having made an initial assessment of the animals, enter all
areas quietly with slow smooth motions. Once you have entered the
building or room, scan the pens for (4, 5):
§ down or lame animals,
§ huddling,
§ increased activity or inactivity at waterers (Figure 2a.),
§ increased activity or inactivity at feeders (Figure 2b.),
§ inactivity, as seen with downer animals
§ and ventilation concerns such as drafts or condensation.