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Calls are used for a variety of purposes, including mate attraction, evaluation of potential mates, bond formation, the claiming and maintenance of territories, the identification of other individuals (such as when parents look for chicks in colonies or when mates reunite at the start of breeding season), and the warning of other birds of potential predators, sometimes with specific information about the nature of the threat. Some birds also use mechanical sounds for auditory communication. The Coenocorypha snipes of New Zealand drive air through their feathers, woodpeckers drum territorially, and palm cockatoos use tools to drum.
Which birds drum territorially?
A: woodpeckers

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Improved sanitation in the developing world is a global need, but a neglected priority as shown by the data collected by the Joint Monitoring Programme for Water Supply and Sanitation (JMP) of UNICEF and WHO. This program is tasked to monitor progress towards the Millennium Development Goal (MDG) relating to drinking water and sanitation. About one billion people have no sanitation facility whatsoever and continue to defecate in gutters, behind bushes or in open water bodies, with no dignity or privacy - which is called open defecation and which poses significant health risks. India is the country with the highest number of people practicing open defecation: around 600 million people. India has also become a focus country for the foundation's sanitation activities which has become evident since the "Reinvent the Toilet Fair" in Delhi, India in March 2014.
India is host to what activity
A: "Reinvent the Toilet Fair" in Delhi, India in March 2014.

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The school has many nationally and internationally acclaimed scholars in social security, health care, health disparities, communication, social and health policy, and individual and family development. Many of the faculty have training in both social work and public health. The school's current dean is Edward F. Lawlor. In addition to affiliation with the university-wide Institute of Public Health, Brown houses 12 research centers. The Brown School Library collects materials on many topics, with specific emphasis on: children, youth, and families; gerontology; health; mental health; social and economic development; family therapy; and management. The library maintains subscriptions to over 450 academic journals.
Who is the Brown School's current Dean?
A: Edward F. Lawlor

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It was unclear if Shell would recommence drilling in mid-2013, following the "Kulluk" incident and, in February 2013, the corporation stated that it would "pause" its closely watched drilling project off the Alaskan coast in 2013, and will instead prepare for future exploration. In January 2014, the corporation announced the extension of the suspension of its drilling program in the Arctic, with chief executive van Beurden explaining that the project is "under review" due to both market and internal issues.
Shell Corporation announced what in January 2014?
A:
the extension of the suspension of its drilling program in the Arctic