...of course it benefits them that colonies are mostly on islands with no terrestrial predators but, as I already said, even if they have a large population with a wide range, these beautiful and now precious Waterfowl Birds still declined rapidly resulting in it being rated as vulnerable by the IUCN (International Union for Conservation of Nature).
This environment in which we all living in has its own limits.
The September equinox (or southward equinox) is the moment when the Sun appears to cross the celestial equator, heading southward.
Because of differences between the calendar year and the tropical year, the September equinox may occur from September 21 to 24.
At the equinox, the Sun, as viewed from the equator, rises due east and sets due west.
Before the southward equinox, the Sun rises and sets more northerly, and afterwards, it rises and sets more southerly.
The equinox may be taken to mark the end of astronomical summer and the beginning of astronomical autumn (autumnal equinox) in the Northern Hemisphere, while marking the end of astronomical winter and the start of astronomical spring (vernal equinox) in the Southern Hemisphere.