American Association of Colleges of Nursing (AACN) - The Clinical Nurse Leader; American Association of Colleges of Nursing's White Paper on the Education and the Role of the Clinical Nurse Leader; American Association of Managed Care Nurses; American Board of Managed Care Nursing; AONE Institute for Leadership Research & Education
1 Female fleas cannot lay eggs until after their first blood meal and begin to lay eggs within 36-48 hours after that meal. 2  The female flea can lay 2,000 eggs in her lifetime.  The female flea consumes 15 times her own body weight in blood daily.
Well, here, you start with the chicken and end up with an egg. Along the way, you discover the reproductive ins and outs of chickens. Young female chickens (pullets) of modern breeds, such as commercial strains of Leghorns, start laying eggs at around 18 to 21 weeks of age and are 8 months old when they reach peak egg production.