Sentence examples for birds presented with from inspiring English sources

Brooding birds, presented with the choice between a smaller egg or a larger one, have been observed to choose the larger, even if it was artificial.

Birds presented with mealworms with secreted defences learned to avoid unpalatable prey on the basis of their colour signals more quickly than birds presented with mealworms with stored defences.

Of the birds presenting with clinical signs, 127 of a total of 153 (83%) sera were positive and of apparently healthy birds 6 of 40 (15%) samples were seropositive (Table 1).

For both the food and object tests, the same number of items as subjects present was used (i.e. two items for two birds present), with items being presented in the centre of a wooden board (board in place outside tests) on the ground.

Once birds consistently used the tool to retrieve food (8/10 on two consecutive blocks of 10 trials), the experienced birds were presented with tool-tubes containing training tools of four lengths (see above) within beak-reach, and a food-tube with food at different depths, out of beak-reach (food could be retrieved by 1 4 of the training tools, depending on food position).

They learned that A was always better than B, and C was always better than D. The confusion arose when the birds were presented with keys B and C together.

They spied on the females from behind a blind a few meters away as the birds were presented with multiple bachelors, some with big masks, some with bright yellow throats.

In the first eight trials the birds were presented with a single starting stimulus.

Birds were presented with 16 choices per day, and we recorded the number of choices of each type of prey.

In the third test (0 vs 5), 89 birds were presented with a choice between models with no eyespots and models with 5 eyespots per hindwing (with the total area being equal to that of the single eyespot).

Birds were presented with a choice between two models, one with two circular spots (diameter = 9 mm) and another with eyespots approximately half the area of the previous (diameter = 6.36 mm).