| Fairy ___ (bluecap) | 19 |
| Chirpy bird | 11 |
| Charles II's royal architect | 32 |
| Brownish song bird | 18 |
| Br. navy member | 15 |
| Birdhouse dweller | 17 |
| Bird with a song | 16 |
| Architect with an avian name | 28 |
| Architect of St. Paul's | 27 |
| Word with house or Carolina | 27 |
| Valuable insect-eater | 21 |
| Ubiquitous songbird | 19 |
| Twittering bird | 15 |
| Tweety bird | 11 |
| Troglodytes troglodytes | 23 |
| St. Paul's architect Christopher | 36 |
| South Carolina's state bird | 31 |
| Small, vocal bird | 17 |
| Small-but-loud songbird | 23 |
| Small but loud songbird | 23 |
| Small brown songbird | 20 |
| Slender-billed songbird | 23 |
| Sir Christopher, the architect | 30 |
| Sir Christopher | 15 |
| Singing insect-eater | 20 |
| Singer with wings | 17 |
| Singer with a wide range | 24 |
| Servicewoman of Britain | 23 |
| Royal Society president, 1680-82 | 32 |
| Royal Society cofounder | 23 |
| Royal Hospital Chelsea architect | 32 |
| Pert bird | 9 |
| P. C. ___, "Beau Geste" novelist | 42 |
| Old World warbler | 17 |
| Melodious singer | 16 |
| Meadowlark's warbling cousin | 32 |
| Loud songbird | 13 |
| Little warbler | 14 |
| Little brown songbird | 21 |
| Legendary architect or tiny songbird | 36 |
| Important British architect | 27 |
| Iconic English architect | 24 |
| Hoppy bird | 10 |
| He wrote "Beau Geste" | 31 |
| He reconstructed St. Paul's | 31 |
| Hampton Court Palace architect | 30 |
| Great English architect | 23 |
| Former 50-pound note portrait | 29 |
| Follower of Christopher or Carolina | 35 |
| Flying singer | 13 |
| English astronomer-turned-architect | 35 |
| Eminent British architect | 25 |
| Drury Lane Theatre architect | 28 |
| Designer of Saint Paul's Cathedral | 38 |
| Creature with the scientific name Troglodytes troglodytes | 57 |
| Cousin of a treecreeper | 23 |
| Cousin of a gnatcatcher | 23 |
| Church architect | 16 |
| Christopher who designed Kensington Palace | 42 |
| Chelsea Hospital architect | 26 |
| Certain songbird | 16 |
| Carolina ___ (little songster) | 30 |
| Cactus __: state bird of Arizona | 32 |
| Cactus ___ (state bird of Arizona) | 34 |
| Cactus ___ (Arizona's state bird) | 37 |
| Builder of churches | 19 |
| Brown-and-black songbird | 24 |
| British Navy woman | 18 |
| British naval servicewoman | 26 |
| Birdhouse warbler | 17 |
| Birdhouse occupant, perhaps | 27 |
| Birdhouse nester | 16 |
| Birdhouse boarder | 17 |
| Birdhouse bird, perhaps | 23 |
| Birdbrained creature? | 21 |
| Bird that perches with its tail straight up | 43 |
| Bird that perches with its tail erect | 37 |
| Bird or architect | 17 |
| Bird on the South Carolina state quarter | 40 |
| Aviary singer | 13 |
| Avian warbler | 13 |
| Avian singer | 12 |
| Astronomer-turned-architect | 27 |
| Arizona's or South Carolina's state bird | 48 |
| Architect whose epitaph says "Reader, if you seek his monument, look around you" | 90 |
| Architect who cofounded the Royal Society | 41 |
| Architect of the Royal Observatory in Greenwich | 47 |
| 1674 architect of Theatre Royal, Drury Lane | 43 |
| "Four larks and a ___": Lear | 38 |
| "Baby Blues" baby | 27 |
| ''Beau Geste'' author | 37 |
| Twist suddenly | 14 |
| Tool chest item | 15 |
| Twisted violently | 17 |
| Warblers using Stillsons? | 25 |
| Strains, as the back | 20 |
| Plumber's collection | 24 |
| Twisting suddenly | 17 |
| Hold over birds? | 16 |
| 1989 in-flight movie? | 21 |