THE NATURALIST'S CALENDAR 389 



Feb. i. Mar. 26 Fragaria sterilis (barren strawberry) fl. 



1 Parus caeruleus (tomtit) makes its 



spring note. 



2 Brown wood-owls hoot. 



3 Hens sit. 



3 Marsh titmouse begins his two harsh 

 sharp notes. 



4. April i Gossamer floats. 



4. April 8 Musca tenax ap. 



5 Laurustinus fl. 



5 Ruscus aculeatus (butcher's broom) fl. 



7 Foxes smell rank. 



10 Turkey-cocks strut and gobble. 



1 2 Yellow-hammer sings. 



13. April 2 Papilio rhamni (brimstone butter- 

 fly) ap. 



13. Mar. 23 Green woodpecker laughs. 

 14-17 Ravens build. 



14. Mar. 27 Taxus baccata (male yew tree) sheds 



its farina. 



15. Mar. 23 Tussilago farfara (coltsfoot) fl. 



1 6. Mar. 6 Rooks build. 



1 7 Partridges pair. 



17. Mar. 8 Pease sown. 



1 8 House pigeons build. 



20. Mar. 30 Field crickets open their holes. 

 21-26 Pulex irritans (common flea) ap. 



2 1 . April 1 3 Ficaria verna (pilewort) fl. 



21. April 5 Goldfinch sings. 



22. Mar. 26 Coluber berus (viper) ap. 



23. April i Oniscus asellus (wood-louse) ap. 



24 Missel thrushes pair. 



24. April 7 Narcissus pseudonarcissus (daffodil) fl. 

 24. April 2 Willow fl. 



25 Frogs croak. 



26. Mar. 31 Viola odorata (sweet violet) fl. 



26 Phalaena tinea vestianella ap. 



27. April 24 Oedicnemus charadrius (stone curlew) 



clamours. 



