Home » Short Observations (Page 4)

  • A Carolina Wren Family Attacked by a Chipmunk

    A Carolina Wren Family Attacked by a Chipmunk

    On April 21 2013, a family (4 juveniles 2 adults) of Carolina Wrens (Thryothorus ludovicianus) were hanging around a downed tree. The chicks were learning to forage while being actively fed by their parents. In the middle of all this a chipmunk approached which made both parents rather nervous. Then the chipmunk made a darting attack. The wren parents defended their chicks quite effectively. One parent dove on the chipmunk with a flying kick. It was so powerful that the […]

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  • Ant Tending Treehopper Larvae

    Ant Tending Treehopper Larvae

    May 23rd 2009 in Georgia State Botanical Garden in Athens, GA, USA. The ant (Formica palidefulva) is tending a number of treehopper (Entylia carinata) nymphs. If watched carefully, the honeydew secreted by the instars are visible at [00:22, 00:28, 00:37] seconds into the video. The mother treehopper is still sitting around the midrib of the thistle where she laid her eggs (dark necrotic patch around her). The story got published in the November 2009 issue of the Atlas Magazine under […]

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  • A Yellow Throated Warbler Collecting Conifer Leaves for Nest Construction

    A Yellow Throated Warbler Collecting Conifer Leaves for Nest Construction

    In this short observation recorded on May 19th 2012 you can watch a a yellow throated warbler (Setophaga dominica) collecting conifer leaves for nest construction. The way it gathers needle leaves in its beak is quite interesting. Nest construction in birds is not all instinctive and has a consirable learning component. Urban birds can sometimes use rather unconventional materials in their nests. For instance urban birds in Mexico City use fibers of cigarette butts which contain poisonous compounds in making […]

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  • Parkta Duran Kelebekler

    Parkta Duran Kelebekler

    15 Haziran 2013 günü Georgia Eyalet Botanik Park’ında dururken gözlemlediğim Apatelodes torrefacta türü güve kelebekler neredeyse tüm Kuzey Amerika’nın doğu yarısında yaygın olarak gözlemlenebilir. Dişiler erkeklerden daha iridir. Bu türün tırtılları dişbudak kiraz vişne akçaağaç ve meşe cinsinden ağaçlar üzerinde beslenirler. Görüntüler iki cinsiyetin tek bir çerçevede görüntülemesi ve yaşam döngüsü içinde olmazsa olmaz niteliğindeki bir davranışı özetlemesi açısından önemli. Örneğin Almanya’da bulunan 47 milyon yıllık iki kaplumbağa taşılı yine benzer bir davranışı belgelemesi nedeniyle büyük ilgi toplamakta.

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  • A Nest Building Hummingbird

    A Nest Building Hummingbird

    In this short but condensed observation you can watch a female Anna’s hummingbird (Calypte anna) construct her nest over 10 days between 18-28th January 2010 recorded in Victoria, British Colombia, Canada. She uses fluff feathers of other birds, spider webbings and cotton tissue around seeds of poplar trees as nest material. The size of the finished nest is typically about 5cm across x 4cm high. Unlike most other bird species in all hummingbirds nest construction and parental care is always […]

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  • A Cannibal Caterpillar?

    A Cannibal Caterpillar?

    On September 22 2012, I encountered this caterpillar eating another fuzzy insect part along the White Trail of the State Botanical Garden of Georgia in Athens, GA. While the munching was going on, a familiar bully of the bushes the ground beetle (Calleida punctata) came in. The beetle harassed and eventually forced the caterpillar away from the leaf. I desperately needed help in explaining the sequence of events happening in this video. Why was the ground beetle so interested in […]

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  • Hammer Eyed Fly (Richardia telescopica)

    Hammer Eyed Fly (Richardia telescopica)

    On September 9th 2001, I encountered this hammer-eyed fly (Richardia telescopica) on STR trail (~600m mark) at La Selva Biological Field Station in Costa Rica. I was rushing on my bicycle to my field site one morning. I had to make an abrubt stop because my path was blocked by a tree fall which I believe was a Hampea appendiculata (Malvaceae). I noticed the fly on one of the branches of the downed tree. I rushed to get the camera […]

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  • Mud Dauber Wasps Constructing Nests

    Mud Dauber Wasps Constructing Nests

    Insects never have boring lives. Mud daubers set a great example. These busy wasps build their nest chambers out of mud. Here in two separate videos you can see the two stages of nest construction: [1] Gathering mud by Sceliphron caementarium filmed in Athens, GA, USA. [2] Construction of the nest chambers by Sceliphron destillatorium from Canary Islands. The genus Sceliphron is found in all of the temperate and tropical continental areas of the world and on many islands (some […]

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  • Tropical Migratory Freshwater Shrimps

    Tropical Migratory Freshwater Shrimps

    These migratory shrimp were filmed in the Peje River, along the border of La Selva Biological Station in April of 2009 by aquatic ecologist Dr. Marcia Snyder. She studied them by measuring their habitat preferences, densities, growth rates and secondary production. She used capture mark recapture technique to estimate their densities and growth rates. Shrimp are largely nocturnal to avoid predators that like to eat them including otters, caiman and fish. During the day, they are often found hiding under […]

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  • Two Ichneumon Wasps Competing to Oviposit

    Two Ichneumon Wasps Competing to Oviposit

    On 7th of July 2011, I noticed these two female parasitoid wasps (Protichneumon grandis) while walking along the Orange Trail of the State Botanical Garden of Georgia. They were fighting with each other to lay their eggs inside a crack of a log using their long ovipositors. One had a pretty good grip. The other was very grumpy for not having access to the crack. These wasps are said to parasitize a sphingid moth species the Rosy Maple Moth (Dryocampa […]

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  • Nesting Chestnut Mandibled Toucan (Ramphastos swainsonii)

    Nesting Chestnut Mandibled Toucan (Ramphastos swainsonii)

    Filmed and edited by by Jean and Phil Slosberg in 2010 the captured footage reflects a slice of natural history of chestnut-mandibled toucans. Slosbergs were able to record the nest preparation, parental care and nest maintenance phases from their home in Costa Rica. They note that after a successful breeding season the pair tried to nest in the same tree again in 2011 but were not successful because meliponid stingless bees have taken over the cavity. They attempted to clean […]

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  • Nesting Nightjar in Camouflage

    Nesting Nightjar in Camouflage

    This is an excellent footage capturing the behavior of a ground nesting nightjar. These birds are night-flying aerial insectivores active during dusk and dawn. It is almost impossible to see them during the day because of their camouflage. Nightjars are also known as goatsuckers which has no biological basis. If an intruder comes dangerously close to the nest, adults perform a well-known “broken wing” display. It is an excellent visual distraction. The bird will easily disappear soon after the intruder is at a […]

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  • Red wasp hunting grasshopper.

    Red wasp hunting grasshopper.

    These sequences were captured on May 14th 2010 in Athens, GA, USA. Young grasshopper nymphs (Romalea microptera) all emerged together as a brood were hanging out on a plant (Galium spp.). There were 17 of them. Red wasp (Polistes carolina) began hovering over for a couple of minutes and attacked one of them. The wasp began eating by chewing the abdomen first and later flew over to the top of a kudzu vine (Pueraria montana) to eat the rest. Although […]

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  • Daytime Hunting of Barred Owl (Strix varia)

    Daytime Hunting of Barred Owl (Strix varia)

    On April 16th 2011, a barred owl glided over my head while I was filming something else along the Orange Trail of the State Botanical Garden of Georgia in Athens, GA. Hunting during daytime indicates that this individual has extra mouths to feed. You can hear the altruistic alarm calls of other nervous birds and rodents. The high pitched alarm call (of a chipmunk?) is particularly audible immediately before each move of the owl. I deliberately kept the scenes long […]

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  • Acid Attack

    Acid Attack

    Wildflowers can build a community of allies for defence. Ants defend extrafloral nectaries (nectar produced in organs other than flowers) of a passion flower vine against herbivores. This is an example of plant-animal interaction evolved to solve at least three biological problems. [1] Extrafloral nectaries seen in this video resemble butterfly eggs.  Butterflies avoid laying their eggs on host plants if they see other eggs. This is particularly true for two species of butterflies Gulf fritillary (Agraulis vanillae) and Variegated […]

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