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With worldwide increases in artificial light and anthropogenic noise, understanding how these pollutants influence animals allows us to better mitigate potential negative effects. Both light and noise affect the timing of daily activities, including the onset of dawn song in birds, yet the influence of these pollutants compared with social factors that also influence song onset remains unknown. We investigated the onset of dawn song, testing hypotheses aimed at understanding the influences of light and noise pollution as well as male competition, pairing status, and breeding stage on timing of dawn singing by male House Wrens (Troglodytes aedon). Overall, models with social factors fit song onset data better than models with abiotic factors of noise and sky glow, and the highest ranking model included nesting stage, number of male neighbors, and temperature. Males began singing earlier when they were building nests and when mates were fertile than during later nesting stages. Males also sang earlier as the number of male neighbors increased. The timing of dawn song by male House Wrens appeared unaffected by day-to-day variation in light and noise pollution, with social factors having larger effects on the onset of daily behavior in this species.

We collected data from 10 caves (3 sites) in the North and Middle Andaman Islands to determine the spatiotemporal changes in the roosting pattern of the Andaman populations of Edible-nest Swiftlet (Aerodramus fuciphagus inexpectatus). This echolocating diurnal aerial forager showed temporal variation in its round-the-clock entry and exit patterns. With spatiotemporal variations (site-wise, cave-wise, hourly, and monthly), more than 98% of birds returned daily to the roosting caves between 1700 h and 2000 h. However, their daily departure time (between 0400 h and 0700 h) did not vary spatially (site-wise and cave-wise). The movements of birds at the cave openings were higher during the nestling period in April and May. The daily roosting period inside the caves (mean 525.20 min; SD 82.98) also showed spatiotemporal variation. Day length affected movement of the birds before and after sunset and sunrise. We conclude that roosting movement of the Andaman Edible-nest Swiftlet varied spatiotemporally in the Andaman Islands. This first detailed description of such variation in the roosting patterns of the species will stimulate further exploration of the various biological and environmental factors affecting movements of this cave-dwelling endemic.

The flight activity of the rugose spiraling whitefly (Aleurodicus rugioperculatus Martin; Hemiptera: Aleyrodidae) peaked in the morning after dawn. There were significantly more whiteflies captured on sticky traps on the east side than on the west side of the plants between 6:00–10:00, which showed that this whitefly was strongly and positively phototactic during that time of the day. This whitefly displayed a second but smaller peak of flight activity in the evening near dusk.

Noche: La presencia de la ausencia, la disolución de la persona en la noche, el horror de ser, la realidad de lo irreal hacen que la noción de il y a “más que a Dios nos lleve a la ausencia de Dios, a la ausencia de todo ente”. Amanecer: No ser consciente de la existencia de ese supuesto centro inalterable de la persona dentro del tiempo no quiere decir que no seamos capaces de explicar la alterable y relativa identidad personal de otras maneras. Día: Soy yo quién fluye, pero yo no estoy en el flujo como un apoyo de donde la vida fluya; yo estoy fluyendo en mi propia realidad. Esto no es similar a una egología, no significa que todo exista y sea amado por mí, sino que quiere decir que todo es visto y amado por mí.