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Description
above: a dolfinch - a fully marine live-bearing canary of Serina's Pangeacene era 228 million years after the introduction of the first canaries, glides just beneath the surface of the sea under the soft light of the gas giant.

Though it can be easy to forget, Serina - even inhabited as it is with life - is a moon and not a planet. It revolves around a far larger celestial body: a bluish colored gas giant which appears as a large "moon" in its own sky, several times larger than our own appears from Earth and easily spotted either day or night. As Serina rotates at an angle along its axis, its planet is not always present in the sky, but when the moon's surface does face it the planet is prominent and unmistakable - and as would be expected, its presence has a very dramatic effect on the world of birds. So large and bright is the light blue celestial body that when it appears at night - which it does roughly half of the time as Serina simultaneously orbits it and rotates on its own axis - when the skies are clear and free of clouds, it illuminates the environment as if a blue floodlight has been cast over the land. The light reflected by the gas giant from the sun which it orbits - and as a result Serina orbits as well - can then be sufficiently bright that diurnal birds continue to call and feed and even the dead of night is bathed in a state of blue twilight, where the normal partitions of day and night life are broken and nocturnal and diurnal animals come out together.. Conversely, when the planet's reflected sunlight is hidden from view on the other side of the moon, the night - particularly under cloud cover - can be pitch black. It is then that the less specialized daylight lifeforms retire and the nocturnal organisms emerge to feed with the greatest ease.

Serina rotates around its planet in an elliptical manner, and thus is at times nearer and further from the gas giant's gravitational pull, which is the source of Serina's tides. Oceanic tides are generally stronger than those of Earth, and richly diverse floodplain ecosystems occur abundantly along the sea coasts as a result of a daily reliable surge of water inland.

Description
above: a dolfinch - a fully marine live-bearing canary of Serina's Pangeacene era 228 million years after the introduction of the first canaries, glides just beneath the surface of the sea under the soft light of the gas giant.

Though it can be easy to forget, Serina - even inhabited as it is with life - is a moon and not a planet. It revolves around a far larger celestial body: a bluish colored gas giant which appears as a large "moon" in its own sky, several times larger than our own appears from Earth and easily spotted either day or night. As Serina rotates at an angle along its axis, its planet is not always present in the sky, but when the moon's surface does face it the planet is prominent and unmistakable - and as would be expected, its presence has a very dramatic effect on the world of birds. So large and bright is the light blue celestial body that when it appears at night - which it does roughly half of the time as Serina simultaneously orbits it and rotates on its own axis - when the skies are clear and free of clouds, it illuminates the environment as if a blue floodlight has been cast over the land. The light reflected by the gas giant from the sun which it orbits - and as a result Serina orbits as well - can then be sufficiently bright that diurnal birds continue to call and feed and even the dead of night is bathed in a state of blue twilight, where the normal partitions of day and night life are broken and nocturnal and diurnal animals come out together.. Conversely, when the planet's reflected sunlight is hidden from view on the other side of the moon, the night - particularly under cloud cover - can be pitch black. It is then that the less specialized daylight lifeforms retire and the nocturnal organisms emerge to feed with the greatest ease.

Serina rotates around its planet in an elliptical manner, and thus is at times nearer and further from the gas giant's gravitational pull, which is the source of Serina's tides. Oceanic tides are generally stronger than those of Earth, and richly diverse floodplain ecosystems occur abundantly along the sea coasts as a result of a daily reliable surge of water inland.