Enigmarch 2023: Day 2

[tahnan]

Nope, I mean it, I'm really doing this: Enigmarch, Day 2. And since this one doesn't rely on layout like Day 1, here it is in text format:

Enigmarch 2: Empty Nests

Inspired by the prompt NEST, I offer you twelve empty nests. Some clues below offer a sense of what they looked like when occupied; perhaps you can spot the occupants.


Empty Nests

1. Suitable for viewing by children (if a mom or a dad says so) (2)
2. Soar through the air (3)
3. Its birthstone is emerald (3)
4. Hat for Charlie Chaplin, John Steed, or a René Magritte subject (6)
5. Pleaded, as for money (6)
6. 2016 movie in which animals perform the titular action under a koala's direction (4)
7. Fifth Peter Gabriel studio album (and the first that wasn't self-titled) or fifth note of the major scale (in an uncommon variant spelling) (2)
8. Double curve, as in a road (3)
9. "Def" name that rapper Yasiin Bey left behind in 2011 (3)
10. Nonsense or meaningless speech, abbreviated to be less vulgar (2)
11. First Lady in the late 1940s (4)
12. First man in the early 4000s BC (4)

Occupied Nests

• 1960s engineering project on the Nile (2 wds.) [1]
• Brand under a chafing dish [1]
• Courage, less commonly [1]
• Hogwash (var. spelling) [3]
• In a weak manner [3]
• Like some questions and some aliens [3]
• Porthos and Him and Her, among others [1]
• Some eastern Iroquois members [1]
• Stunned (2 wds) [1]
• Third parties hold them [1]
• What Rickey Henderson has rarely been caught doing, or what Jane's Addiction has [3]
• With outward-bent limbs (hyph.) [2]

EDIT: And now, an answer checker!