Sentence examples for birds were observed from inspiring English sources

During experimental sessions, birds were observed from behind a blind to avoid disturbance by the observer.

Hardly any benefits for grassland and orchard birds were observed.

In total, 38 species of wild breeding birds were observed in the 26 parks.

Eighty-two specincludinguding 24 shrubland birds, were observed in one breeding season.

Many resident and Neotropical migratory birds were observed foraging on mistletoes.

The introduction and expansion of the telegraph and railroad beginning in the 1840s meant that wherever the birds were observed the information could be distributed quickly and widely.

Each of 66 marked birds was observed for on average of 14.2 ± SD: 8.9 h throughout the observation period.

The more these intriguing birds are observed by scientists, the more an apparent intelligence comes to light.

As if on cue, a group of birds was observed hovering over a rooftop across the street.

Clearly the vast knowledge available on birds can drown a bird enthusiast in grim detail, but the keenness with which birds are observed can also be cheering.

With the DS method, a population estimate cannot be calculated if no birds are observed with the rapid method in units surveyed with both the rapid and intensive methods or if no birds are observed with the intensive method.