בראשית, פרק ז׳, פסוק ג׳

As the floodwaters loom, God's instructions for the Ark shift to the skies, detailing the birds that must be saved to ensure the continuation of life. The primary approach among commentators is that this command specifically targets clean birds. Just as Noah was instructed to gather seven pairs of clean land animals, he must gather seven pairs of clean birds. Unclean birds, typically birds of prey, were not naturally found in Noah’s home, whereas clean, domesticated birds were readily available [מלבי״ם]. The instruction encompasses a broad category of birds to include even those unfit for future sacrifices, or species where only the female is considered clean [צפנת פענח]. Conversely, another perspective suggests that the command applies to all birds, both clean and unclean. Gathering seven pairs of every species provided Noah with a crucial reserve. If he needed to send a bird out of the Ark to check the receding waters, a single pair would carry the risk of extinction; if an unclean bird like the raven perished on such a mission, its entire species would vanish forever [קאסוטו].

The requirement to bring an equal number of males and females carries specific intentions. Biologically, a single male can mate with multiple females, making an equal ratio strictly for reproduction unnecessary. Therefore, the equal number hints that the surplus males are designated for future burnt offerings, which are exclusively male. Alternatively, bringing distinct pairs served as a test to ensure the animals would refrain from mating while inside the Ark [פענח רזא]. When referring to these birds, the pairing is described simply as male and female, contrasting with the more intimate language used for land animals. This distinction stems from their origins: land mammals are born alive and whole, much like humans, whereas birds hatch from eggs that possess no independent life when first laid [ריב״א].

The sequence in which the animals are gathered also shifts. While earlier instructions prioritized birds to reflect the original order of creation, here the land animals take precedence. Land mammals share a closer bond with humanity and will constitute the majority of the sacrifices Noah offers upon leaving the Ark, earning them priority in this context [גור אריה, שפתי חכמים, לבוש האורה].

The overarching goal of gathering these pairs is to guarantee the global continuity of each species after the deluge, as their natural habitats span the entire earth [רד״ק]. The focus is on the future existence and repopulation of the species, rather than just Noah's immediate responsibility to feed them during the voyage [קאסוטו]. This requirement for future continuity also serves as a strict disqualifier: any animal that is old, castrated, injured, or suffering from a terminal illness cannot reproduce. Such animals fail the mandate of continuing their species and are consequently unfit for sacrifice [תורה תמימה, העמק דבר]. Beyond mere survival, preserving a large number of clean, domesticated birds and land animals was designed for human benefit. These species are essential for food and daily needs. By bringing an abundance of already domesticated animals onto the Ark, humanity was spared the arduous task of restarting the domestication process from scratch, ensuring a swift and stable recovery for the world after the floodwaters receded [תולדות יצחק, מלבי״ם].