Loodusemees.ee image bank Loodusemees.ee - the day in pictures

Eaglets one month old

Submitted by Looduskalender on Sat, 14.05.2016 - 18:48

Webcam image captured by Mutikluti, LK forum

Translation Liis

Morning in eagle nest

White-tailed eagle     Merikotkas      Haliaeëtus albicilla

The chicks of white-tailed eagle pair Anna and Uku were hatched on April 13, 16 and 19, at exactly the same intervals that the eggs were laid in the nest, that is on March 8, 11 and 14. All can calculate the lengths of the incubation periods for themselves.

VIDEO: Wide world calling

Submitted by Looduskalender EN on Fri, 13.05.2016 - 10:17

Video recorded by  Urmas Lettwww.eenet.ee

Translation Liis

 

Tawny owl     Kodukakk      Strix aluco

In the next few days the first ”daring” chick will leave the nest, and the others will follow. Aided by the strong beak and claws they will climb around in the trees near the nest, letting the adults know by calling where to come to feed them. In a couple of weeks they achieve a measure of flying skill but exercise makes a master. The family will be busy together probably until August.

 

Do the pigmented spots on the egg make the shell stronger?

Submitted by Looduskalender EN on Fri, 13.05.2016 - 10:11

Text and photos  Marko Mägimarko.magi@ut.ee

Translation Liis

Great tit eggs  

Most tits have already finished their egg-laying. The females sit in the nests, adjust the eggs every now and then and wait for the chicks to hatch. There is not long time left until the first tit chicks appear. On observing the incubation in the nest camera it is possible to see how active a process it is – it is not just sitting in one place but an active ”trampling” procedure which the egg shells bravely have to withstand..

Brood patch – what is it?

Submitted by Looduskalender EN on Fri, 13.05.2016 - 10:01

Text  Margus Ots, coordinator of Great Tit Year

Translation Liis

Looking at an incubating great tit in the webcam the question might come up – how can it incubate the eggs through the fluffy plumage? Feathers have a very poor heat transmission capacity after all. To make the body heat reach to the eggs the feathers of the female great tit on the abdomen drop off, and a skin area without plumage is created – the brood patch.  So during the brooding period the eggs come into contact with the skin of the abdomen  that is rich in blood vessels and the heat  needed for the development of the chicks reaches the eggs.