| Bird: Comb. form | 16 |
| Alternative to a .wav file | 26 |
| .MOV alternative | 16 |
| Prefix with culture or fauna | 28 |
| Opening for birds? | 18 |
| Bird-related prefix | 19 |
| Another prefix with "culture" | 39 |
| Word form of "bird" | 29 |
| Word form for ''bird'' | 38 |
| Windows Media Player file format | 32 |
| Roman's ancestors | 21 |
| Relative of an mp4 | 18 |
| Quicktime file extension | 24 |
| Prefix meaning bird | 19 |
| Prefix meaning 'bird' | 29 |
| Prefix meaning ''bird'' | 39 |
| Prefix for the birds? | 21 |
| Prefix for fauna or culture | 27 |
| Multimedia file format | 22 |
| MPEG or .mov alternative | 24 |
| MPEG alternative | 16 |
| Mp4 relative | 12 |
| It means ''bird'' | 33 |
| Internet movie file extension | 29 |
| Grandfathers: Lat. | 18 |
| Format introduced by Microsoft in 1992 | 38 |
| Florentines' forefathers | 28 |
| Feathered friend's prefix | 29 |
| Fauna forerunner | 16 |
| Culture opening | 15 |
| Bird-related: Prefix | 20 |
| Bird prefix | 11 |
| Beginning for the birds? | 24 |
| Ancestors: Lat. | 15 |
| Ancestors: It. | 14 |
| "Crispin: The Cross of Lead" Newbery Medal-winning author | 67 |
| .mpeg alternative | 17 |
| Big name in sneakers | 20 |
| Adidas alternative | 18 |
| Sneakers brand | 14 |
| Keds competitor | 15 |
| Etonic competitor | 17 |
| Sports shoe brand | 17 |
| Saucony rival | 13 |
| Fitness brand | 13 |
| Brand of sneaker | 16 |
| Big name in sports shoes | 24 |
| Walking-shoe name | 17 |
| Sports-shoe brand | 17 |
| Sport-shoe brand | 16 |
| Sneakers brand since 1979 | 25 |
| Sneaker brand with an arrow in its logo | 39 |
| Shoe named from the Latin for "fly" | 45 |
| Shoe company with an arrow in its logo | 38 |
| Shoe company founded in Oregon | 30 |
| Shoe brand since 1979 | 21 |
| Shoe brand once endorsed by Scottie Pippen | 42 |
| Saucony competitor | 18 |
| Roman's grandmother | 23 |
| Name in running apparel | 23 |
| Maker of the Bolt sneaker | 25 |
| Maker of the Bolt athletic shoe | 31 |
| Maker of running shoes | 22 |
| Maker of Art Elite running shoes | 32 |
| Former sneaker brand | 20 |
| Fitness shoe brand | 18 |
| Brand sold on Zappos.com | 24 |
| Beaverton-based bootery brand | 29 |
| Athletic shoe with an arrow in its logo | 39 |
| Athletic shoe company | 21 |
| Athletic shoe brand with an arrow in its logo | 45 |
| Athletic shoe brand since 1979 | 30 |
| 1987 Reebok acquisition | 23 |
| Bird-related | 12 |
| Of birds | 8 |
| Pertaining to birds | 19 |
| For the birds | 13 |
| Relating to birds | 17 |
| Of the birds | 12 |
| Like Audubon's interests | 28 |
| Concerning birds | 16 |
| Like a hawk | 11 |
| Having to do with birds | 23 |
| Like owls | 9 |
| Like cardinals | 14 |
| Kind of zoo exhibit | 19 |
| Winged, perhaps | 15 |
| Of interest to Audubon | 22 |
| Loony? | 6 |
| Like some kites | 15 |
| Like a roc | 10 |
| Like a cardinal | 15 |
| To do with birds | 16 |
| Peckish? | 8 |
| Ornithological | 14 |
| Oriole-related, e.g. | 20 |
| Of interest to bird-watchers | 28 |
| Of doves, hawks, etc. | 21 |
| Like many nest-builders | 23 |
| Like hawks or auks | 18 |