The primary motivation for migration appears to be food; for example, some hummingbirds choose not to migrate if fed through the winter. Also, the longer days of the northern summer provide extended time for breeding birds to feed their young. This helps diurnal birds to produce larger clutches than related non-migratory species that remain in the tropics. As the days shorten in autumn, the birds return to warmer regions where the available food supply varies little with the season.
Which birds will not migrate if they are well fed through winter?
hummingbirds

The core technology used in a videoconferencing system is digital compression of audio and video streams in real time. The hardware or software that performs compression is called a codec (coder/decoder). Compression rates of up to 1:500 can be achieved. The resulting digital stream of 1s and 0s is subdivided into labeled packets, which are then transmitted through a digital network of some kind (usually ISDN or IP). The use of audio modems in the transmission line allow for the use of POTS, or the Plain Old Telephone System, in some low-speed applications, such as videotelephony, because they convert the digital pulses to/from analog waves in the audio spectrum range.
What is one digital network through which a digital stream can be transmitted?
IP

In September 2009, a U.S. Drone strike reportedly killed Ilyas Kashmiri, who was the chief of Harkat-ul-Jihad al-Islami, a Kashmiri militant group associated with Al-Qaeda. Kashmiri was described by Bruce Riedel as a 'prominent' Al-Qaeda member, while others described him as the head of military operations for Al-Qaeda. Waziristan had now become the new battlefield for Kashmiri militants, who were now fighting NATO in support of Al-Qaeda. On 8 July 2012, Al-Badar Mujahideen, a breakaway faction of Kashmir centric terror group Hizbul Mujahideen, on conclusion of their two-day Shuhada Conference called for mobilisation of resources for continuation of jihad in Kashmir.
What group did Al-Badar Mujahideen break away from?
Hizbul Mujahideen