| .םיבורגנמ תיפנא (50 | ||||||||||
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בחר היעבצ ןווגמ .מ"ס 60 כ היפנכ תטומ ,מ"ס 35-48 הלדוג :םיבורגנמה תפנא B. s. brevipes ץראבש הז םינימ תת 30 םיעודי .ןימה ותואב םימעפל היסא חרזמ דעו ודוהמו הקירפא בור הניטנגרא דעו הינרופילקמ ערתשמ הלודיג תיב .הילרטסוא דעו הינייקוא ךרד םיגומלא תוינוש דיל .היבורגנמ יצע דיל רקיעב םיחילמו םיקותמ םימ יווקמ ,התויח תיב .תוציבו םימגא ,תורהנ םע םיחותפ םיחטשב םיתיעלו תליא דיל הרידנו הביצי ץראב .19 א"י ארקיו רפסב םיאמטה תופועה ןיב תרכזנ....הנימל הפנאה... | ||||||||||
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Subspecies and Distribution.
B. s. striatus E Panama to all S America. B. s. anthonyi W USA, Baja California. B. s. frazari S Baja California. B. s. virescens C USA, E Canada to Panama and Caribbian. B. s. bahamensis Bahamas. B. s. sundevalli Galapagus. B. s. atricapillus Africa S Sahara, Guinea. B. s. rutenbergi Madagascar. B. s. brevipes Red Sea and N Somalia. B. s. crawfordi Aldabra and Amirante Is. B. s. rhizophorae Comoro Is. B. s. degens Seychelles. B. s. albolimbatus Diego Garcia, Chagos and Maldive Is. B. s. cholriceps India, Sri Lanka. B. s. javanicus Burma to Thailand. B. s. amurensis Korea, japan and Bonin Is. B. s. actophilus China to N Vietnam and Burma B. s. spodiogaster Andomans, Nicobars Is. and sumatra. B. s. carcinophilus Taiwan, Philippines. B. s. steini Lesser Sundas. B. s. moluccarum Moluccas. B. s. papuensis New Guinea and Aru Is. B. s. idenburgi New Guinea. B. s. rogersi NW Western Australia. B. s. cinereus NE Western Australia. B. s. stagnatilis NC Australia. B. s. littleri New Guinea, Queensland. B. s. macrorhynchus New Caledonia, Loyalty Is. B. s. solomonensis New Hanover to Fiji. B. s. patruelis Tahiti, Society Is. | ||||||||||
Descriptive notes.45 cm, 135-250 gr, wingspan 58 cm.Small size, extensive variation in plumage. Juvenil brownish heavily streaked on neck and spotted whitish and buffish on upperwing.Most races separated essentially on coloration of head and neck and on size. Habitat.Fresh and salt water, in mangroves or in dense vegetation along rivers, lakes, streams, ponds or estuaries and open areas like mud flats, tidal zones and coral reefs.Mostly in lowlands but recorded at 4000 m in Peru. Food and FeedingFish and amphibians with insects, spiders, crabs, prawns and other crustaceans, reptiles and mice.Feeds alone, make use with wide range of techniques including "baiting" (whereby a bird uses bait to attract its prey), also performs "aerial flycatching" (to capture flying prey). Generally tends to be crepuscular and nocturnal, and sometimes daily. Breeding.In tropics related to rains. Generally breeds alone or in small groupsNest is well hidden amongst branches of rees of bushes at height of 1-10 m over ground or water. 2-5 eggs incubation 20-25 days, chicks have pale grey down, white below. Movements.Most northerly races migratory. In Africa basically sedentary with some dispersal of the Red Sea.Status and Conservation.Not globally threatend. Generally common to locally abundant.Israel.In Israel subspecies B. s. brevipes present regularly throughout year but does not breed. |
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