The livestream’s remote cameras will capture dozens of moose as they swim across the Ångerman River, some 300 kilometers (187 miles) northwest of Stockholm, in the annual spring migration toward summer grazing pastures.

Swedish public television producers have spent the past few days rushing to ready cameras for one of the most anticipated shows of the season. But the last-minute chaos wasn’t the result of poor planning or inexperienced crewmembers—it’s all the moose ’s fault.