Possible Clues:

• Brood at home -- one of the youngsters took food
• How to hatch something with young journalist in first Spanish separatist movement rising
• Keep eggs at reasonable temperature in apprentice and amateur centre
• Warm for a while on an island, followed by extremes of temperature
• Nurture, as a startup
• Develop island in midwinter
• Develop gradually
• Brood at home, worried about youngster
• Brood in Caribbean republic given note
• Develop under favourable conditions, bacteria say