Nh\u1eefng ng\u01b0\u1eddi \u0111\u00e3 t\u1eebng nu\u00f4i chim b\u1ed3 c\u00e2u \u0111\u1ec1u bi\u1ebft, chim b\u1ed3 c\u00e2u c\u00f3 th\u1ec3 bay \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng d\u00e0i, v\u00e0 kh\u00f4ng b\u1ecb l\u1ea1c \u0111\u01b0\u1eddng, c\u00f3 b\u00ed m\u1eadt g\u00ec trong \u0111\u00f3 v\u1eady nh\u1ec9? V\u1ea5n \u0111\u1ec1 n\u00e0y \u0111\u00e3 g\u00e2y th\u00edch th\u00fa cho nhi\u1ec1u nh\u00e0 khoa h\u1ecdc. Qua nghi\u00ean c\u1ee9u t\u00ecm hi\u1ec3u trong th\u1eddi gian d\u00e0i, c\u00f3 nh\u00e0 khoa h\u1ecdc cho r\u1eb1ng, chim b\u1ed3 c\u00e2u ngo\u00e0i c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m bay c\u1ee7a lo\u00e0i chim n\u00f3i chung ra, ch\u1ed7 l\u1ed3i l\u00ean gi\u1eefa hai m\u1eaft c\u1ee7a ch\u00fang, trong khi bay \u0111\u01b0\u1eddng d\u00e0i c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a t\u1eeb tr\u01b0\u1eddng Tr\u00e1i \u0110\u1ea5t. H\u1ecd \u0111\u00e3 \u0111\u01b0a ra th\u1eed nghi\u1ec7m 20 con chim b\u1ed3 c\u00e2u \u0111\u00e3 qua hu\u1ea5n luy\u1ec7n, tr\u00ean c\u00e1nh c\u1ee7a 10 con trong \u0111\u00f3 \u0111\u1eb7t m\u1ed9t mi\u1ebfng nam ch\u00e2m nh\u1ecf, tr\u00ean c\u00e1nh c\u1ee7a 10 con kh\u00e1c \u0111\u1eb7t l\u00ean mi\u1ebfng \u0111\u1ed3ng, k\u1ebft qu\u1ea3 khi th\u1ea3 chim ra l\u00e0: hai ng\u00e0y c\u00f3 8 con chim b\u1ed3 c\u00e2u \u0111\u01b0\u1ee3c \u0111\u1eb7t mi\u1ebfng \u0111\u1ed3ng sau tr\u1edf v\u1ec1, c\u00f2n nh\u1eefng con chim b\u1ed3 c\u00e2u c\u00f3 mang nam ch\u00e2m, th\u00ec sau 4 ng\u00e0y, ch\u1ec9 c\u00f3 1 con tr\u1edf v\u1ec1 v\u00e0 t\u1ecf ra r\u1ea5t m\u1ec7t m\u1ecfi. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y, nam ch\u00e2m \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean c\u00e1nh c\u1ee7a chim b\u1ed3 c\u00e2u \u0111\u00e3 sinh ra t\u1eeb tr\u01b0\u1eddng, g\u00e2y nhi\u1ec5u v\u1edbi t\u1eeb tr\u01b0\u1eddng v\u1ed1n c\u00f3 c\u1ee7a Tr\u00e1i \u0110\u1ea5t, l\u00e0m cho chim b\u1ed3 c\u00e2u kh\u00f4ng th\u1ec3 nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng h\u01b0\u1edbng \u0111\u1ec3 bay v\u1ec1 nh\u00e0 m\u00ecnh.<\/p>\n\n\n\n
C\u00e1c nh\u00e0 khoa h\u1ecdc trong khi nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t hi\u1ec7n, chim b\u1ed3 c\u00e2u ngo\u00e0i vi\u1ec7c c\u00f3 th\u1ec3 l\u1ee3i d\u1ee5ng t\u1eeb tr\u01b0\u1eddng Tr\u00e1i \u0110\u1ea5t \u0111\u1ec3 “d\u1eabn \u0111\u01b0\u1eddng” ra, c\u00f2n c\u00f3 th\u1ec3 c\u0103n c\u1ee9 v\u00e0o \u00e1nh n\u1eafng M\u1eb7t Tr\u1eddi \u0111\u1ec3 d\u1eabn \u0111\u01b0\u1eddng. C\u00e1c nh\u00e0 khoa h\u1ecdc cho r\u1eb1ng, \u0111\u00f3 l\u00e0 “\u0111\u1ed3ng h\u1ed3 sinh v\u1eadt” trong c\u01a1 th\u1ec3 chim b\u1ed3 c\u00e2u \u0111ang ti\u1ebfn h\u00e0nh \u0111i\u1ec1u ch\u1ec9nh theo s\u1ef1 di chuy\u1ec3n c\u1ee7a M\u1eb7t Tr\u1eddi \u0111\u1ec3 l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng h\u01b0\u1edbng. Ch\u00fang c\u00f2n c\u00f3 th\u1ec3 ki\u1ec3m tra \u0111\u1ed9 l\u1ec7ch c\u1ee7a \u00e1nh s\u00e1ng, ch\u1ec9 c\u1ea7n kh\u00f4ng c\u00f3 \u0111\u00e1m m\u00e2y \u0111en che k\u00edn b\u1ea7u tr\u1eddi th\u00ec c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng M\u1eb7t Tr\u1eddi l\u00e0m “la b\u00e0n” \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
T\u1eeb \u0111\u00f3 cho th\u1ea5y, chim b\u1ed3 c\u00e2u c\u00f3 th\u1ec3 bay \u0111\u01b0\u1ee3c v\u1ec1 nh\u00e0 c\u1ee7a m\u00ecnh t\u1eeb n\u01a1i r\u1ea5t xa, l\u00e0 b\u1edfi v\u00ec n\u00f3 c\u00f3 nhi\u1ec1u c\u00e1ch ph\u00e2n bi\u1ec7t ph\u01b0\u01a1ng h\u01b0\u1edbng. V\u00e0o nh\u1eefng ng\u00e0y tr\u1eddi m\u01b0a, chim b\u1ed3 c\u00e2u kh\u00f4ng th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c s\u1ef1 di chuy\u1ec3n v\u1ecb tr\u00ed c\u1ee7a M\u1eb7t Tr\u1eddi, th\u00ec ch\u00fang c\u00f3 th\u1ec3 theo t\u1eeb tr\u01b0\u1eddng Tr\u00e1i \u0110\u1ea5t \u0111\u1ec3 “d\u1eabn \u0111\u01b0\u1eddng”, khi tr\u1eddi n\u1eafng th\u00ec ch\u00fang l\u1ea1i l\u1ee3i d\u1ee5ng \u00e1nh n\u1eafng M\u1eb7t Tr\u1eddi l\u00e0m “kim ch\u1ec9 nam”. Ngo\u00e0i ra, m\u1ed9t s\u1ed1 nh\u00e0 khoa h\u1ecdc c\u00f2n ph\u00e1t hi\u1ec7n ra, chim b\u1ed3 c\u00e2u c\u00f2n c\u00f3 th\u1ec3 l\u1ee3i d\u1ee5ng m\u00f9i \u0111\u1ec3 l\u00e0m \u0111\u1ea7u m\u1ed1i t\u00ecm \u0111\u01b0\u1eddng v\u1ec1.<\/p>\n\n\n\n
B\u1edfi v\u00ec chim b\u1ed3 c\u00e2u c\u00f3 t\u00e0i bay \u0111\u01b0\u1eddng d\u00e0i \u0111\u1ec3 t\u00ecm \u0111\u01b0\u1eddng v\u1ec1 nh\u00e0, do v\u1eady, t\u1eeb x\u01b0a \u0111\u1ebfn nay, ng\u01b0\u1eddi ta l\u1ee3i d\u1ee5ng chim b\u1ed3 c\u00e2u \u0111\u1ec3 l\u00e0m c\u00f4ng t\u00e1c th\u00f4ng tin v\u00e0 h\u00e0ng h\u1ea3i, \u0111\u00e1nh b\u1eaft c\u00e1 ho\u1eb7c qu\u00e2n s\u1ef1. Ng\u00e0y 5 th\u00e1ng 6 n\u0103m 1916, thi\u1ebft b\u1ecb th\u00f4ng tin c\u1ee7a Ph\u00e1p \u1edf m\u1ed9t khu v\u1ef1c ph\u00f2ng th\u1ee7 b\u1ecb bom \u0111\u1ea1n c\u1ee7a qu\u00e2n \u0110\u1ee9c ph\u00e1 hu\u1ef7, t\u00ecnh h\u00ecnh r\u1ea5t nguy c\u1ea5p, may m\u00e0 c\u00f2n m\u1ed9t con chim b\u1ed3 c\u00e2u \u0111\u01b0a th\u01b0, th\u1ea3 ch\u00fang bay \u0111i c\u1ea7u vi\u1ec7n, ch\u1eb3ng bao l\u00e2u xe vi\u1ec7n tr\u1ee3 \u0111\u00e3 \u0111\u1ebfn, th\u00ec tr\u1eadn \u0111\u1ecba m\u1edbi gi\u1eef \u0111\u01b0\u1ee3c. Cho d\u00f9 ng\u00e0y nay v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n k\u0129 thu\u1eadt th\u00f4ng tin cao \u0111\u1ed9, l\u1ee3i d\u1ee5ng chim b\u1ed3 c\u00e2u \u0111\u01b0a th\u01b0 chuy\u1ec3n tin t\u00ecnh b\u00e1o qu\u00e2n s\u1ef1 v\u1eabn c\u00f3 t\u00e1c d\u1ee5ng quan tr\u1ecdng.<\/p>\n\n\n\n
Chim b\u1ed3 c\u00e2u bay \u0111\u01b0\u1eddng d\u00e0i l\u00e0 do \u0111\u01b0\u1ee3c ch\u1ee7 nh\u00e2n hu\u1ea5n luy\u1ec7n d\u1ea7n. Hu\u1ea5n luy\u1ec7n chim b\u1ed3 c\u00e2u non kh\u00f4ng \u0111\u01b0\u1ee3c s\u1ed1t ru\u1ed9t, tr\u01b0\u1edbc ti\u00ean c\u1ea7n ph\u1ea3i \u0111\u1ec3 chim b\u1ed3 c\u00e2u non quen v\u1edbi m\u00f4i tr\u01b0\u1eddng xung quanh, sau \u0111\u00f3 khi ch\u00fang \u0111\u00f3i, th\u00ec mang ch\u00fang ra hu\u1ea5n luy\u1ec7n bay. Kho\u1ea3ng c\u00e1ch v\u00e0i l\u1ea7n ban \u0111\u1ea7u ph\u1ea3i ng\u1eafn, sau khi chim b\u1ed3 c\u00e2u non bay \u0111\u01b0\u1ee3c v\u1ec1, ph\u1ea3i l\u1eadp t\u1ee9c cho ch\u00fang \u0103n no, c\u00f2n ph\u1ea3i chu\u1ea9n b\u1ecb m\u1ed9t ch\u1eadu n\u01b0\u1edbc, \u0111\u1ec3 cho ch\u00fang t\u1eafm r\u1eeda ngh\u1ec9 ng\u01a1i. Sau khi chim b\u1ed3 c\u00e2u non tr\u01b0\u1edfng th\u00e0nh, c\u01a1 th\u1ec3 d\u1ea7n d\u1ea7n kho\u1ebb m\u1ea1nh, \u0111\u1ecba \u0111i\u1ec3m v\u00e0 ph\u01b0\u01a1ng h\u01b0\u1edbng th\u1ea3 \u0111\u1ec1u c\u00f3 th\u1ec3 thay \u0111\u1ed5i, kho\u1ea3ng c\u00e1ch c\u0169ng c\u00f3 th\u1ec3 d\u00e0i th\u00eam. Chim b\u1ed3 c\u00e2u \u0111\u01b0a th\u01b0 lo\u1ea1i gi\u1ecfi c\u00f2n c\u00f3 th\u1ec3 hu\u1ea5n luy\u1ec7n bay trong \u0111\u00eam \u0111\u01b0\u1ee3c n\u1eefa kia!<\/p>\n","protected":false},"excerpt":{"rendered":"
Nh\u1eefng ng\u01b0\u1eddi \u0111\u00e3 t\u1eebng nu\u00f4i chim b\u1ed3 c\u00e2u \u0111\u1ec1u bi\u1ebft, chim b\u1ed3 c\u00e2u c\u00f3 th\u1ec3 bay \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng d\u00e0i, v\u00e0 kh\u00f4ng b\u1ecb l\u1ea1c \u0111\u01b0\u1eddng, c\u00f3 b\u00ed m\u1eadt g\u00ec trong \u0111\u00f3 v\u1eady nh\u1ec9? V\u1ea5n \u0111\u1ec1 n\u00e0y \u0111\u00e3 g\u00e2y th\u00edch th\u00fa cho nhi\u1ec1u nh\u00e0 khoa h\u1ecdc. Qua nghi\u00ean c\u1ee9u t\u00ecm hi\u1ec3u trong th\u1eddi gian d\u00e0i, c\u00f3 nh\u00e0 […]<\/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":[15,10],"tags":[],"class_list":["post-8505","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-sinh-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8505","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=8505"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8505\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}