Ivo Jacobs (@ivojacobs) · DIRTY

Ivo Jacobs

@ivojacobs

Cognitive zoologist investigating the evolution of animal cognition, particularly in response to fire (pyrocognition). Amateur wildlife photographer based in southern Sweden. More interested in rare behaviours than rare species.

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Ivo Jacobs@ivojacobs· 23h

Starlings are too brilliant for this world. #photography #birds

A common starling seen from the side walking away from the camera through a field of flowers and grass with dew drops. The morning light reveals its brilliantly coloured plumage.

Ivo Jacobs@ivojacobs· 1d

Help, how do I put my crow back together? #photography #birds

A carrion crow seen from the side in a stubble field. It has just finished scratching its head and is in the middle of retracting a foot, captured against its back in this shot, giving it an odd posture.

Ivo Jacobs@ivojacobs· Feb 25

A fledgling carrion crow delighted to receive a piece of roadkill from a parent #photography #birds

The fledgling seen from the side, with distinctive pale eyes and pink inside the beak, turning its head with beak open, while the parent places food in its beak

Ivo Jacobs@ivojacobs· Feb 23

Punk in the front, fancy in the back #photography #birds

A Eurasian magpie perched on a metal fence, seen from the back with its head turned to the camera. Bare skin patches caused by moulting can be seen on the head, while the shiny, colourful feathers of the tail and wing appear to be in pristine condition.

Ivo Jacobs@ivojacobs· Jan 22

Mute swan #photography #birds

Ivo Jacobs@ivojacobs· Jan 19

New preprint out!🧪🌍🔥 I observed 17 bird species at two prescribed fires in Sweden. They appeared to mostly ignore the fire, and some (such as this skylark) even sang through the smoke - an important comparison with birds from fire-prone regions (reviewed here). www.authorea.com/users/102018...

Ivo Jacobs@ivojacobs· Jan 18

Egyptian gosling, nature's mowing machines #photography #birds

An Egyptian gosling feeding on grass and flowers, two of its siblings napping in the background

Ivo Jacobs@ivojacobs· Dec 19

New paper out! 🧪 On reconstructing dinosaur cognition through contemporary cognitive science - a primer on the function of neurons and cognition, the role of extant animals, thermobiology, tools, arms races, foraging, and model-based cognition. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...

A graph comparing the number of neurons in the telencephalon of reptiles, birds, and two estimates for T. rex. Even the lowest of these estimates suggests the telencephalic neuron count of T. rex to be similar to that of a pygmy falcon or blackbird - several times more than the largest telencephalic neuron count of extant reptiles.

Ivo Jacobs@ivojacobs· Nov 1

A late galah for headless bird Halloween #photography #birds

A galah perched on a branch with wing outstretched and head missing (because it's preening)

Ivo Jacobs@ivojacobs· Oct 23

Walk like an Egyptian (gosling) #photography #birds

Side view of a small Egyptian gosling with a foot up, walking over a street

Ivo Jacobs@ivojacobs· Oct 22

Swan in heaven #photography #birds

Close-up of a mute swan preening itself, showing only its head with closed eyes rubbing against a sea of white feathers

Ivo Jacobs@ivojacobs· Oct 21

Tufted duck is suspicious #photography #birds

A male tufted duck, in black and white plumage, preens his back while floating on a lake, with the vibrant yellow eye halfway closed.

Ivo Jacobs@ivojacobs· Oct 20

Crashing wave of Egyptian goslings #photography #birds

Eight brown-and-white Egyptian goslings on a small wave in a river facing the observer

Ivo Jacobs@ivojacobs· Oct 12

Fight club - Egyptian geese edition got an update: now with anime backgrounds #photography #birds

Two geese flying low over a lake - one flying to the side of the frame and the incoming goose flying in from the top of the frame, ready to attack with wings spread and bill open. The background reflections on the lake form streaks of light.

Ivo Jacobs@ivojacobs· Sep 19

Don't disturb the wild boarlet lakeside siesta #mammals #photography

Two little wild boars, seen through thick foliage with a lake in the background, having a nap against a tree

Ivo Jacobs@ivojacobs· Sep 17

Tiny dinosaur in the form of a long-tailed tit early in the blueish morning #photography #birds

A long-tailed tit perched on a leafy branch, seen from the side in blue morning light

Ivo Jacobs@ivojacobs· Sep 16

Celebratory galah! 🪶

A galah, in its typical pink and grey plumage, poses on a dead branch with wings spread and fluffy head crest raised.

Ivo Jacobs@ivojacobs· Sep 15

Befuddled Egyptian gosling #photography #birds

Close-up of a small Egyptian gosling, in white-brown plumage, on the ground looking towards the viewer.

Ivo Jacobs@ivojacobs· Sep 11

The bread thief is ever watching from afar #photography #birds

A carrion crow with a piece of bread in its beak on a grass field, being watched by another crow far away as a blurry, dark shape

Ivo Jacobs@ivojacobs· Sep 10

Egyptian gosling #photography #birds

A fluffy, brown-white gosling stepping out of a river, with head turned sideways and one foot off the ground.

Ivo Jacobs@ivojacobs· Sep 9

Starlings are always unbelievable #photography #birds

An adult common starling seen from behind, with its head turned sideways towards the camera, showing its iridescent spotty plumage while standing in a grass field.

Ivo Jacobs@ivojacobs· Sep 8

Great crested grebe parents with their four grebelets #photography #birds

Two adult grebes on a lake, one preening in the foreground, the other surrounded by two swimming offspring and two on its back, on of which curiously looking at a sibling.

Ivo Jacobs@ivojacobs· Sep 7

Preening coot trying to distract me from its feet #photography #birds

A Eurasian coot perched on a submerged stick on a lake while preening, its eye closed and bill under the wing.

Ivo Jacobs@ivojacobs· Aug 29

New ballet coming soon: Coot Lake #photography #birds

An Eurasian coot skipping over the surface of the lake captured at high frame rate, as if it's hovering over its reflection with a splash of water where it stepped.

Ivo Jacobs@ivojacobs· Aug 27

The coot family is hungry #photography #birds

A young Eurasian coot on a lake, surrounded by reeds, tilting its head to accept a food transfer from a parent.

Ivo Jacobs@ivojacobs· Aug 23

Young Eurasian coot #photography #birds

A fluffy brown-grey coot juvenile seen from the side, with orange bill, against a green grassy background

Ivo Jacobs@ivojacobs· Aug 22

One small step for crow, one giant leap for crowkind #photography #birds

A carrion crow walks towards the camera with its head tilted, surrounded by green grass and small flowers

Ivo Jacobs@ivojacobs· Aug 6

"Corvids are so sinister, mysterious, and ominous" Meanwhile, corvids in real life: #photography #birds

A carrion crow lying down in a meadow, surrounded by grass and small flowers.

Ivo Jacobs@ivojacobs· Aug 2

The trophy of a nuthatch #photography #birds

A Eurasian nuthatch clinging upside down and vertically against a tree trunk in its typical pose, while holding a sprouted seed in its bill tip.

Ivo Jacobs@ivojacobs· Jul 30

Three black redstart fledglings waiting for the next food delivery #photography #birds

Three little grey-brown birds with yellow bills looking around while perched on a mossy stone