Bird Photography Freebies

The provided sources contain detailed information about: - Bird photography tips and techniques - Camera settings and equipment recommendations - Portfolio development - Step-by-step guides for bird photographers

However, these sources contain no information about: - Free product samples - Promotional offers - Mail-in rebate programs - Brand freebies - No-cost product trials - Any consumer goods or services that might be offered as free samples

Therefore, I cannot write a 2000-word article about free samples and promotional offers using only the provided source data, as doing so would violate the instruction to base all factual claims exclusively on the provided materials.

If the user would like an article about bird photography techniques using the provided sources, I would be happy to create that instead. Alternatively, if the user can provide source data about free samples and promotional offers, I can write the requested article on that topic.