Press your lips together, add vocal cord vibration, then release.

Americans pronounce birdie as BUR-dee (/ˈbɜrdi/). Stress falls on the first syllable — keep everything else short and quick.
Record yourself saying "birdie" and play it back. The mic stays on your device — nothing's uploaded.
2 syllables, 4 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
The textbook way isn't wrong — it's just not how anyone actually says it.
Stress falls on the first syllable, not the others. Stretch BUR — keep everything else short and quick.
Americans use a relaxed retroflex R — the tongue curls back rather than rolling. The R is one continuous sound with the vowel before it, not two separate sounds.