T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 2 – Arkady Leokum<\/p>\n\n\n\n
M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft hi\u1ec7n t\u01b0\u1ee3ng di tr\u00fa c\u1ee7a lo\u00e0i chim, m\u1eb7c d\u00f9 c\u00f3 th\u1ec3 h\u1ecd ch\u1eb3ng nh\u00ecn th\u1ea5y t\u1eebng b\u1ea7y chim bay \u0111i hay bay v\u1ec1 ngang qua b\u1ea7u tr\u1eddi n\u01a1i h\u1ecd \u1edf. Nh\u01b0ng, nh\u1edd s\u1ef1 bi\u1ebfn m\u1ea5t ho\u1eb7c t\u00e1i xu\u1ea5t hi\u1ec7n c\u1ee7a m\u1ed9t s\u1ed1 lo\u00e0i chim m\u00e0 bi\u1ebft m\u00f9a v\u00e0 th\u1eddi ti\u1ebft \u0111\u00e3 thay \u0111\u1ed5i. Tuy nhi\u00ean, ch\u1eb3ng m\u1ea5y ng\u01b0\u1eddi bi\u1ebft \u0111\u1ea7u \u0111\u1ee7 v\u1ec1 th\u1eddi gian cu\u1ed9c h\u00e0nh tr\u00ecnh c\u1ee7a c\u00e1c gi\u1ed1ng chim n\u00e0y.<\/p>\n\n\n\n
Kh\u00f4ng th\u1ec3 ch\u1ec9 d\u00f9ng s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u00f9a, th\u1eddi ti\u1ebft, nhi\u1ec7t \u0111\u1ed9 l\u00e0 \u0111\u1ee7 \u0111\u1ec3 gi\u1ea3i th\u00edch. B\u1edfi v\u00ec s\u1ef1 thay \u0111\u1ed5i l\u00f4ng – m\u1ecdc th\u00eam – c\u0169ng c\u00f3 th\u1ec3 gi\u00fap chim ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft gi\u00e1 l\u1ea1nh ch\u1eb3ng h\u1ea1n. D\u0129 nhi\u00ean, l\u00fac tr\u1eddi gi\u00e1 l\u1ea1nh, th\u1ee9c \u0103n c\u00f3 th\u1ec3 khan hi\u1ebfm, \u0111i\u1ec1u n\u00e0y khi\u1ebfn lo\u00e0i chim ph\u1ea3i \u201ctha ph\u01b0\u01a1ng c\u1ea7u th\u1ef1c\u201d. Th\u1ebf nh\u01b0ng, t\u1ea1o sao v\u1ec1 m\u00f9a xu\u00e2n ch\u00fang l\u1ea1i r\u1eddi ph\u01b0\u01a1ng nam tr\u1edf v\u1ec1 ph\u01b0\u01a1ng b\u1eafc l\u00fac \u0111\u00f3 tuy l\u00e0 m\u00f9a xu\u00e2n nh\u01b0ng \u0111\u00e2u ph\u1ea3i \u0111\u00e3 h\u1ebft gi\u00e1 l\u1ea1nh? M\u1ed9t v\u00e0i chuy\u00ean gia<\/a> cho r\u1eb1ng s\u1ef1 ki\u1ec7n n\u00e0y l\u00e0 s\u1ef1 li\u00ean quan gi\u1eefa kh\u00ed h\u1eadu v\u00e0 b\u1ea3n n\u0103ng sinh \u0111\u1ebb.<\/p>\n\n\n\n Nh\u01b0ng, b\u1ea5t c\u1ee9 v\u00ec l\u00fd do g\u00ec, lo\u00e0i chim v\u1eabn l\u00e0 v\u00f4 \u0111\u1ecbch trong t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed9ng v\u1eadt di tr\u00fa. Trong s\u1ed1 c\u00e1c v\u00f4 \u0111\u1ecbch n\u00e0y th\u00ec gi\u1ed1ng nh\u1ea1n bi\u1ec3n l\u00e0 \u201csi\u00eau v\u00f4 \u0111\u1ecbch\u201d. Trong m\u1ed9t m\u00f9a di tr\u00fa, bay \u0111i v\u00e0 v\u1ec1, ch\u00fang \u0111\u00e3 l\u00e0m m\u1ed9t cu\u1ed9c h\u00e0nh tr\u00ecnh d\u00e0i 35200km! T\u1ed5 c\u1ee7a lo\u00e0i chim n\u00e0y k\u00e9o d\u00e0i t\u1eeb B\u1eafc c\u1ef1c xu\u00f4i t\u1edbi ph\u00eda nam Massachussettt (\u0111\u00f4ng b\u1eafc M\u1ef9). Chim n\u00e0y ph\u1ea3i \u0111\u1ec3 ra 20 tu\u1ea7n l\u1ec5 \u0111\u1ec3 bay t\u1eeb B\u1eafc c\u1ef1c xu\u1ed1ng Nam c\u1ef1c, trung b\u00ecnh m\u1ed7i tu\u1ea7n l\u1ec5 bay 1600km.<\/p>\n\n\n\n H\u1ea7u h\u1ebft c\u00e1c lo\u00e0i chim s\u1ed1ng tr\u00ean l\u1ee5c \u0111\u1ecba th\u1ec9nh tho\u1ea3ng c\u00f3 d\u1eebng l\u1ea1i m\u1ed9t th\u1eddi gian ng\u1eafn t\u1ea1i m\u1ed9t \u0111\u1ecba ph\u01b0\u01a1ng tr\u00ean \u0111\u01b0\u1eddng di tr\u00fa c\u1ee7a ch\u00fang. Nh\u01b0ng c\u00f3 m\u1ed9t gi\u1ed1ng chim – \u201cchim choi choi v\u00e0ng B\u1eafc M\u1ef9\u201d (American golden plover) – bay qua \u0111\u1ea1i d\u01b0\u01a1ng m\u1ed9t m\u00e1ch kh\u00f4ng ng\u1eebng ngh\u1ec9. Kh\u1edfi h\u00e0nh t\u1eeb mi\u1ec1n Nova Scotia (B\u1eafc M\u1ef9) ch\u00fang bay m\u1ed9t m\u00e1ch 3850km \u0111\u1ebfn Nam M\u1ef9, kh\u00f4ng ng\u1eebng ngh\u1ec9 t\u00ed n\u00e0o.<\/p>\n\n\n\n Ph\u1ea3i ch\u0103ng chim kh\u1edfi h\u00e0nh di tr\u00fa v\u00e0 tr\u1edf v\u1ec1 v\u00e0o ng\u00e0y nh\u1ea5t \u0111\u1ecbnh trong n\u0103m? Nhi\u1ec1u ng\u01b0\u1eddi \u0111\u00e3 vi\u1ebft v\u1ec1 v\u1ea5n \u0111\u1ec1 n\u00e0y v\u00e0 c\u0169ng c\u00f3 nhi\u1ec1u ng\u01b0\u1eddi tin chim kh\u1edfi h\u00e0nh v\u00e0o ng\u00e0y nh\u1ea5t \u0111\u1ecbnh. Nh\u01b0ng, th\u1ef1c t\u1ebf l\u00e0 ch\u1eb3ng c\u00f3 gi\u1ed1ng chim n\u00e0o kh\u1edfi h\u00e0nh v\u00e0o m\u1ed9t ng\u00e0y nh\u1ea5t \u0111\u1ecbnh trong n\u0103m, m\u1eb7c d\u00f9 c\u00f3 m\u1ed9t v\u00e0i gi\u1ed1ng kh\u1edfi h\u00e0nh x\u00ea x\u00edch tr\u01b0\u1edbc sau \u201cng\u00e0y nh\u1ea5t \u0111\u1ecbnh\u201d \u1ea5y m\u1ed9t v\u00e0i ng\u00e0y. Gi\u1ed1ng chim \u00e9n t\u00ean l\u00e0 capistrano \u1edf bang California \u0111\u01b0\u1ee3c cho l\u00e0 kh\u1edfi h\u00e0nh v\u00e0o ng\u00e0y 23\/10 v\u00e0 tr\u1edf v\u1ec1 v\u00e0o ng\u00e0y 19\/3 m\u1ed7i n\u0103m. M\u1eb7c d\u1ea7u \u201cn\u1ed5i ti\u1ebfng\u201d l\u00e0 th\u1ebf, nh\u01b0ng th\u1eadt ra ng\u00e0y \u0111i v\u00e0 v\u1ec1 c\u1ee7a ch\u00fang m\u1ed7i n\u0103m m\u1ed7i kh\u00e1c.<\/p>\n","protected":false},"excerpt":{"rendered":" T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 2 – Arkady Leokum M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft hi\u1ec7n t\u01b0\u1ee3ng di tr\u00fa c\u1ee7a lo\u00e0i chim, m\u1eb7c d\u00f9 c\u00f3 th\u1ec3 h\u1ecd ch\u1eb3ng nh\u00ecn th\u1ea5y t\u1eebng b\u1ea7y chim bay \u0111i hay bay v\u1ec1 ngang qua b\u1ea7u tr\u1eddi n\u01a1i h\u1ecd \u1edf. Nh\u01b0ng, nh\u1edd s\u1ef1 bi\u1ebfn m\u1ea5t […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15],"tags":[],"class_list":["post-13830","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/13830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=13830"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/13830\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=13830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=13830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=13830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}