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13 May

We're now reaching the period in which my main study area offers the lowest amount of nectar plants and a nearly-absolute dominance of few grasses. The vast majority of spots resemble overused hay meadows and only one extremely tiny spot south to the abandoned hay meadow in Zone I managed to attract some insects, alongside my regular resting spot in Zone II.

Weak to moderate winds and temperatures already reaching 20°C at 10:43 AM also influenced this field trip more than during previous days. The lack of any clouds, unfortunately, turned out to be insignificant.

+-------------------------+---------------------------------+--------+
| Species                 | Location                        | Status |
+-------------------------+---------------------------------|--------+
| Anthocharis cardamines  | Zone II / III                   | Adult  |
|-------------------------|---------------------------------|--------|
| Celastrina argiolus     | Zone III                        | Adult  |
|-------------------------|---------------------------------|--------|
| Coenonympha pamphilus   | Zone I                          | Adult  |
|-------------------------|---------------------------------|--------|
| Erynnis tages           | Zone I                          | Adult  |
|-------------------------|---------------------------------|--------|
| Pieris napi             | Zone I / II / III               | Adult  |
|-------------------------|---------------------------------|--------|
| Polyommatus bellargus   | Zone II                         | Adult  |
|-------------------------|---------------------------------|--------|
| Pyrgus malvae           | Zone II                         | Adult  |
+-------------------------+---------------------------------+--------+

Nevertheless, I managed to make two unexpected observations. A freshly-hatched P. bellargus was resting next to me in Zone II, whereas one individual on Zone III, which I initially suspected to be P. icarus solely based on its shade of blue, turned out to be C. argiolus after checking three photos I managed to take while it was resting on a leaf. C. argiolus was last observed in 2022.

Other than that, the oriole (O. oriolus), which was first heard in 2023, appears to become a permanent resident within my main study area.