This tablet is of a type used by the Assyrian merchants to track the income and expenses generated by caravan shipments. The cuneiform text, read from left to right, records not only the amount of silver invested in tin and textiles, but also the less commonly traded precious stone lapis lazuli, which was sourced from Afghanistan. (...)

żebyś im na własnym garbie wszystko przyniósł

- Common swifts remain airborne for 10 months of their non-breeding period

- Dawn and dusk ascents occur throughout the migration and wintering periods

- Periodic nocturnal landings of short duration occur in most individuals

- A new micro data logger with optimized sampling routines made this research possible