Rocket zips up his jacket and grabs the field guide. "Today we test the data!" he says.
Raven tucks her notebook under her arm. "We check which birds we see against their months."
Nova floats ahead to the park path. "Record everything," she says. "A record that matches is good data. One that does not match is interesting data."
Great data checking, explorer! Next week we ask what happens when a habitat itself changes.