1) “Nature: Big Little Journeys” opener, 8 p.m., PBS. This three-week series shows small creatures with big migrations. Only one per cent of baby turtles reach adulthood, we’re told; in Canada, we see one try to cross a highway and reach a lake, to avoid freezing. And in South Africa, a bushbaby (shown here, not in a scene from the film) looks for a home. Both encounter creatures – a moose, an elephant, etc. — much larger.
2) “FBI True,” 10 p.m., CBS. Last week’s hour looked at the 1993 siege near Waco, Texas; this one comes in its aftermath. Radicalized by accounts of the siege, Timothy McVeigh bombed an Oklahoma City federal building, killing 19 children and 149 adults and injuring 680. This views the complex search for people who had helped him.
3) “Echo” opener, Disney+ and Hulu. This is a Disney+ specialty – brief series with Marvel or “Star Wars” characters. Its “Hawkeye” had a supporting role for Echo — Native American, deaf and in a big-city crime gang. Now she returns to her Oklahoma home. Aloqua Cox, who is Menominee/Mohican and deaf, stars; Devery Jacobs (“Reservation Dogs”) plays her cousin.
4) More streaming. Cush Jumbo is known for her strong work as Lucca in “The Good Wife” and “The Good Life.” Before that, however, she was busy in her native England. She returns there in the taut “Criminal Recod” (today on Apple TV+) as a young cop uncovering corruption, There’s more this week, from “A History of the World in Six Glasses” (Fox Nation) to Kevin Hart’s “Lift” (Friday on Netflix).
5) MORE: For the first time in months, the three Chicago shows are together; they rerun their season-finales now, leading into next Wednesday’s season-openers. Also, ABC has pro basketball, with the Pelicans and Warriors at 8:30 p.m. ET. And after all the attention to writer-director Greta Gerwig’s “Barbie,” we can revisit her previous film. The superb “Little Women” reboot (2019) is 9 p.m. on Starz.