Question

Почему в городе Туле не стали жить ласточки, при этом во множестве появились стрижи?

Answer 1

Не стало грязи. А в строительство гнезд входит и грязь (перестало строительство гнезд.

Answer 2

Why Swallows Did Not Settle in Tula and Swifts Appeared Instead

The absence of swallows in the city of Tula and the appearance of swifts in large numbers can be attributed to several factors.

Environmental Factors: The absence of swallows and the appearance of swifts in Tula can be influenced by environmental factors such as climate, habitat, and food availability. Swallows and swifts have different habitat preferences and may be influenced by the specific environmental conditions in the area.

Habitat and Nesting Preferences: Swallows are known to prefer nesting in buildings and structures, while swifts are more likely to nest in natural or man-made cavities, such as cliffs or eaves. The availability of suitable nesting sites in Tula may have favored swifts over swallows.

Food Availability: The availability of food sources, such as insects, can also influence the presence of swallows and swifts in an area. Differences in insect populations or foraging opportunities may have contributed to the prevalence of swifts in Tula.

Migration Patterns: Migration patterns of swallows and swifts can also play a role in their presence or absence in a specific location. Changes in migration routes or patterns could impact the distribution of these birds in different regions.

Local Observations: Local observations and anecdotal evidence from residents or birdwatchers in Tula may provide additional insights into the specific reasons for the absence of swallows and the prevalence of swifts in the area.

In summary, the absence of swallows and the appearance of swifts in Tula can be influenced by a combination of environmental factors, habitat preferences, food availability, migration patterns, and local observations.

If you have any further questions or need more information, feel free to ask!