身近な鳥も消えていく、北米では50年間で29％減（字幕・20日）

01:52

01:52

00:47

01:44

02:15

02:15

01:29

00:41

00:55

01:19

01:33

02:12

01:50

00:45

02:35

00:31

00:31

01:28

01:57

02:02

01:04

00:55

01:19

01:19

01:52

01:29

01:27

01:15

00:49

00:35

01:36

01:34

01:15

01:05

01:35

02:16

01:31

00:59

01:24

01:14

01:29

02:31

01:30

03:07

00:45

01:26

00:51

01:46

01:31

02:57

01:26

01:04

01:49

01:05

01:15

01:53

01:56

01:23

04:54

01:24

01:26

01:06

01:19

01:19

01:41

01:00

00:40

01:46

00:55

00:31

01:45

00:58

00:38

00:45

01:06

01:16

01:01

01:17

00:54

00:51

01:24

01:36

01:04

02:04

02:07

01:48

02:03

01:43

02:01

01:31

01:08

00:54

01:14

01:19

01:33

01:37

01:48

01:38

00:47

03:31

01:08

00:49

02:14