The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Research was carried out in the years 1988,1989 and 1992 in a colony of House Martins with around 100 nests situated under a bridge on the river Narew near the town of Białystok. No correlation was found between the mean day temperature or humidity and the number of eggs laid, hatching success and fledging success. Recorded in 1989 - but not in 1988 - was a directly proportional relationship between...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.